Knowledge And Wisdom

Watch Free Documentaries Online

2009-05-14T06:33:00.001-07:00

Watch free documentaries from independent film makers and worldwide feature films from BBC, CBC, PBS, HBO, Showtime, History Channel, Documentary Channel, National Geographic, Biography Channel, and much more.

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The Most Expensive Amazon.com Items

2008-09-27T08:53:00.001-07:00

Check out some of the most expensive items at Amazon.com

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OBEY Giant

2008-08-24T18:13:00.001-07:00

Obey Giant tribute page with art, t-shirts, obama t-shirts, hoodies, photos, merchandise, Andre the Giant, political t-shirts, posters and more.

read more | digg story

How To Get Paid Online

2008-03-13T11:02:00.001-07:00

There are a large number of things you can do online and get paid. From taking out surveys and trying free offers to reading emails or receiving text messages to clicking on links and surfing the web to shopping and dining out. You can also get paid to play games and watch movies online! And as luck would have it, you can even get paid to blog!

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Shelf Cloud Over Saskatchewan

2008-01-22T00:05:00.000-08:00

Explanation: Perhaps it's time to go inside. Such thoughts might occur to people witnessing the approach of an impressive shelf cloud. Shelf clouds are typically seen leading thunderstorms, although they may precede any well defined front of relatively cold air. Shelf clouds differ from roll clouds because shelf clouds are attached to a larger cloud system lurking above. Similarly, shelf clouds differ from wall clouds because wall clouds typically trail storm systems. The above pictured shelf cloud was photographed toward the southwest during a trip crossing the prairies of Saskatchewan, Canada on the Trans-Canada Highway in 2001 August. A rising Sun illuminated the impressive cloud from the east as it advanced from the west.

King River, Tasmania

2008-01-21T18:31:00.000-08:00

Starry Night Castle

2008-01-19T15:48:00.000-08:00

Explanation: The tantalizing Pleiades star cluster seems to lie just beyond the trees above a dark castle tower in this dramatic view of The World at Night. Recorded earlier this month, the starry sky also features bright star Aldebaran below the Pleiades and a small, faint, fuzzy cloud otherwise known as Comet Holmes near picture center at the top of the field. Starry Night Castle might be an appropriate name for the medieval castle ruin in the foreground. But its traditional name is Mörby Castle, found north of Stockholm, near lake Skedviken in Norrtälje, Sweden.

'Krakatau's Child' Erupts

2007-11-09T23:34:00.000-08:00

ANAK KRAKATAU, Indonesia (AP) -- Sending a boom across the bay, the offspring of the fabled Krakatau volcano unleashes another mighty eruption, blasting smoke and red-hot rocks hundreds of feet into the sky.

Planets Over Pony Express Lake

2007-07-18T12:38:00.000-07:00

Explanation: Beautiful sunset sky colors are reflected in Pony Express Lake in this twilight skyview from northern Missouri, USA, planet Earth. Recorded on Monday, a two day old crescent Moon and brilliant planet Venus shine through thin clouds. Joining the conjunction on the right of the Moon's sunlit crescent is fellow wanderer Saturn, with Regulus, alpha star of the constellation Leo, above and right of Venus. Moonlight and Venus light streak the almost-calm lake waters.

Manhattanhenge: A New York Sunset

2007-07-13T10:44:00.000-07:00

Explanation: Today, if it is clear, well placed New Yorkers can go outside at sunset and watch their city act like a modern version of Stonehenge. Manhattan will flood dramatically with sunlight just as the Sun sets precisely on the centerline of every street. Usually, the tall buildings that line the gridded streets of New York City's tallest borough will hide the setting Sun. This effect makes Manhattan a type of modern Stonehenge, although only aligned to about 30 degrees east of north. Were Manhattan's road grid perfectly aligned to east and west, today's effect would occur on the Vernal and Autumnal Equinox, March 21 and September 21, the only two days that the Sun rises and sets due east and west. Pictured above in this horizontally stretched image, the the Sun sets down 34th Street as viewed from Park Avenue. If today's sunset is hidden by clouds do not despair -- the same thing happens twice each year, in late May and mid July. On none of these occasions, however, should you ever look directly at the Sun.

NGC 6384: Beyond The Stars

2007-07-12T17:12:00.001-07:00

Explanation: The universe is filled with galaxies. But to see them astronomers must look out beyond the stars of our galaxy, the Milky Way. For example, consider this colorful telescopic view of spiral galaxy NGC 6384, about 80 million light-years away in the direction of the constellation Ophiuchus. At that distance, NGC 6384 spans an estimated 150,000 light-years. The sharp image shows details in the distant galaxy's blue spiral arms and yellowish core. Still, the individual stars seen in the picture are all in the close foreground, well within our own galaxy. The brighter Milky Way stars show noticeable crosses, or diffraction spikes, caused by the telescope itself. This particular field of view is about 1/4 degree wide and is relatively rich in foreground stars because it looks out near the crowded center of the Milky Way.

Constellations And Cloudy Skies

2007-07-11T14:35:00.000-07:00

Explanation: Recorded earlier in July, the clouds of planet Earth reflect moonlight and a faint, reddish glow in this serene sea and skyscape. Beyond them lie the cosmic dust and star clouds of the Milky Way. The near-midnight view looks south from a beach in northern France and finds the constellation Sagittarius, the Archer, peaking above the horizon. Bright planet Jupiter rules on the right, wandering among the stars of the constellation Scorpius. Of course, the Galactic Center itself is hidden behind the Milky Way clouds in Sagittarius. To find them, just put your cursor over the picture and follow the arrow.

Shuttle Ferry

2007-07-08T23:30:00.000-07:00

Explanation: How does a space shuttle that landed in California get back to Florida for its next launch? The answer is by ferry. NASA operates two commercial Boeing 747 airplanes modified to carry a space shuttle on their backs. Designated officially as Shuttle Carrier Aircraft or SCA, the 747s were made for commercial flights but bolstered by NASA with several struts, stabilizers, and electronic monitors. Spanning about 70 meters in length, the two aircraft's combined mass is nearly 150,000 kilograms. Pictured above, the space shuttle Atlantis is shown being ferried back to NASA Kennedy Space Center in Florida in September 1998.

Infrared Trifid

2007-07-07T01:55:00.000-07:00

Explanation: The Trifid Nebula, aka Messier 20, is easy to find with a small telescope, a well known stop in the nebula rich constellation Sagittarius. But where visible light pictures show the nebula divided into three parts by dark, obscuring dust lanes, this penetrating infrared image reveals filaments of glowing dust clouds and newborn stars. The spectacular false-color view is courtesy of the Spitzer Space Telescope. Astronomers have used the Spitzer infrared image data to count newborn and embryonic stars which otherwise can lie hidden in the natal dust and gas clouds of this intriguing stellar nursery. As seen here, the Trifid is about 30 light-years across and lies only 5,500 light-years away.

Bright Galaxy NGC 2903

2007-07-06T03:22:00.000-07:00

Explanation: Spiral galaxy NGC 2903 is only some 20 million light-years distant in the constellation Leo. One of the brighter galaxies visible from the northern hemisphere, it is surprisingly missing from Charles Messier's famous catalog of celestial sights. This impressively sharp color image shows off the galaxy's beautiful blue spiral arms. Included in the ground-based telescopic view are intriguing details of NGC 2903's central regions -- a remarkable mix of old and young star clusters with immense dust and gas clouds. In fact, NGC 2903 exhibits an exceptional rate of star formation activity near its center, also bright in radio, infrared, ultraviolet, and x-ray bands. Just a little smaller than our own Milky Way, NGC 2903 is about 80,000 light-years across.

Night-Shining Clouds

2007-07-05T08:49:00.000-07:00

Explanation: Alluring noctilucent or night-shining clouds lie near the edge of space, some 80 kilometers above Earth's surface. Of course, when viewed from space the clouds are more properly called polar mesospheric clouds (PMCs) -- seen here for the first time in image data from the Aeronomy of Ice in the Mesosphere (AIM) satellite. The clouds form over the poles in the corresponding summer season and are now being seen more frequently at lower latitudes. This paticular view from June 11 details the PMC structures forming over the north polar region in white and blue. (Black indicates no cloud data was available.) The AIM satellite should be able to track two complete cloud seasons over both poles to investigate possible connections between the high altitude night-shining clouds and global change in the lower atmosphere.

Red, White, And Blue Sky

2007-07-04T00:05:00.001-07:00

Explanation: Contrasting colors in this beautiful sunset sky were captured on June 30 from Clear Creek Canyon Observatory in central Arizona, USA. The twilight scene includes brilliant Venus as the evening star, with a bright Saturn just above it, shining through thin clouds. The two wandering planets were a mere 1 degree apart or so, about twice the width of the full Moon rising above the eastern horizon on the other side of the sky. In fact, such serene skyviews were possible from all over planet Earth as Venus and Saturn approached a conjunction. Regulus, alpha star of the constellation Leo, is above and to the left of the close planetary pairing. At dusk, lights in tonight's sky will also feature Venus and Saturn low in the west and separated by about 2 degrees.

At The Edge Of Victoria Crater

2007-07-03T22:00:00.000-07:00

Explanation: We're going in. The robotic Opportunity rover currently rolling across Mars has been prowling around the edge of the largest crater it has visited since landing over three years ago. It has been studying Victoria crater and looking for a way in. Now scientists on Earth have decided to take a calculated risk and plan to send Opportunity right into this ancient Martian crater over the next few weeks. Pictured is Cape St. Vincent, part of the wall of Victoria Crater next to where Opportunity will descend. The wall itself appears to contain clues about the Martian terrain before the impact that created Victoria crater, and so will be studied during the daring descent. Above the crater wall, far in the distance, lays a relatively featureless Martian horizon.

Bush spares Libby from prison

2007-07-02T21:34:00.000-07:00

WASHINGTON D.C. United States (Reuters) - President George W. Bush on Monday spared former White House aide Lewis "Scooter" Libby from prison, enraging Democrats who accused Bush of abusing power in a case that has fueled debate over the Iraq war.

Stalwart conservatives in Bush's Republican party had pressured him to pardon Libby -- Vice President Dick Cheney's former chief of staff -- and saw him as the victim of an overly zealous prosecutor. He was sentenced last month to 2-1/2 years in prison for obstructing a CIA leak probe and his imprisonment was imminent.

Read the whole story at www.reuters.com

Zooming In To The Pelican Nebula

2007-07-02T02:04:00.000-07:00

Explanation: Where on the sky is the Pelican Nebula? APOD features many objects on the night sky, but usually does not have the resources to show exactly where on the night sky each objects lies. Today, thanks to inventive digital manipulations of Filipe Alves, it is possible to show you exactly where on the sky the photogenic Pelican Nebula can be found. Clicking on the above arrow will cause many browsers to download and play a spectacular movie that zooms from the perspective of an unaided human eye to that of a powerful telescope. The observatory dome visible on the right is part of Calar Alto Observatory in southern Spain. The image zooms into the constellation of Cygnus, passes the dust structure in the Pelican head housing unborn stars. Watch the video here.

Steep Cliffs On Mars

2007-07-01T21:03:00.000-07:00

Explanation: Vertical cliffs of nearly two kilometers occur near the North Pole of Mars. Also visible in the above image of the Martian North Polar Cap are red areas of rock and sand, white areas of ice, and dark areas of unknown composition but hypothesized to be volcanic ash. The cliffs are thought to border volcanic caldera. Although the sheer drop of the Martian cliffs is extreme, the drop is not as deep as other areas in our Solar System, including the 3.4-kilometer depth of Colca Canyon on Earth and the 20 kilometer depth of Verona Rupes on Uranus' moon Miranda. The above image, digitally reconstructed into a perspective view, was taken by the High Resolution Stereo Camera on board the ESA's robotic Mars Express spacecraft currently orbiting Mars.

Jumbled Galaxy Centaurus A

2007-06-30T21:51:00.001-07:00

Explanation: At the center of this sharp skyscape, Centaurus A seems to be a fantastic jumble of old yellow stars, young blue star clusters, and imposing dark dust lanes. Spanning over 60,000 light-years, the peculiar elliptical galaxy is apparently the result of a collision of two otherwise normal galaxies. The left over cosmic debris is steadily being consumed by a black hole with a billion times the mass of the Sun which lies at the center of Centaurus A. It's likely that such black hole central engines generate the radio, X-ray, and gamma-ray energy radiated by Centaurus A and other active galaxies. For an active galaxy Centaurus A is close, a mere 10 million light-years away, and is well-studied by earthbound astronomers.

Cat's Eye Wide And Deep

2007-06-29T00:16:00.000-07:00

Explanation: The Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky. Its more familiar outlines are seen in the the brighter central region of this impressive wide-angle view. But the composite image also combines many short and long exposures to reveal the nebula's extremely faint halo. At an estimated distance of 3,000 light-years, the faint outer halo is over 5 light-years across. Planetary nebulae have long been appreciated as a final phase in the life of a sun-like star. More recently, some planetary nebulae are found to have halos like this one, likely formed of material shrugged off during earlier episodes in the star's evolution. While the planetary nebula phase is thought to last for around 10,000 years, astronomers estimate the age of the outer filamentary portions of this halo to be 50,000 to 90,000 years. Visible on the right, some 50 million light-years beyond the Cat's Eye, lies spiral galaxy NGC 6552.

Astronomy Picture Of The Day

2007-06-28T07:31:00.000-07:00

A Visit from Atlantis

Explanation: This remarkable image of the space shuttle orbiter Atlantis docked with the International Space Station (ISS) was taken at a range of 190 nautical miles. To record the fast moving pair, last week astronomers at Clay Center Observatory, near Boston, Massachusetts, planet Earth, used a satellite tracking system and 25-inch diameter telescope in combination with a digital video camera. In the sharp picture, Atlantis is below and left of center. The aft view shows three main engines just below its vertical tail glinting in the sunlight. With the Sun shining from below, the body of the orbiter casts a long shadow across the ISS itself and impressive details of the ISS solar arrays used for power generation are easily visible. The large set of solar arrays installed at the lower right was delivered during this visit from Atlantis.

Astronomy Picture Of The Day

2007-06-27T07:43:00.000-07:00

Neon Saturn

Explanation: If seen in the right light, Saturn glows like a neon sign. Although Saturn has comparatively little of the element neon, a composite image false-colored in three bands of infrared light highlights features of the giant ringed planet like a glowing sign. At the most blue band of the infrared light featured, false-colored blue in the above image, Saturn itself appears dark but Saturn's thin rings brightly reflect light from our Sun. Conversely, Saturn's B ring is so thick that little reflected light makes it through, creating a dark band between Saturn's A and C rings. At the most red band of the infrared, false-colored red above, Saturn emits a surprisingly detailed thermal glow, indicating planet-wide bands, huge hurricane-like storms, and a strange hexagon-shaped cloud system around the North Pole. In the middle infrared band, false-colored green, the sunlit side of Saturn's atmosphere reflects brightly. The above image was obtained in late February by the robotic Cassini spacecraft orbiting about 1.6 million kilometers out from Saturn.

CIA tried to get Mafia to kill Castro: documents

2007-06-26T19:40:00.000-07:00

WASHINGTON D.C. United States (Reuters) - The CIA worked with three American mobsters in a botched "gangster-type" attempt to assassinate Cuban leader Fidel Castro in the early 1960s, according to documents released by the CIA on Tuesday.

The CIA hauled the skeletons out of its closet by declassifying hundreds of pages of long-secret records that detail some of the agency's worst illegal abuses during about 25 years of overseas assassination attempts, domestic spying and kidnapping.

Read the whole story at www.reuters.com

Astronomy Picture Of The Day

2007-06-26T03:01:00.000-07:00

Tuesday, June 26, 2007

Wisps of the Iris Nebula

Explanation: Like delicate cosmic petals, these clouds of interstellar dust and gas have blossomed 1,300 light-years away in the fertile star fields of the constellation Cepheus. Sometimes called the Iris Nebula and dutifully cataloged as NGC 7023, this is not the only nebula in the sky to evoke the imagery of flowers. Still, this beautiful digital image shows off the Iris Nebula's range of colors and symmetries in impressive detail. Within the Iris, dusty nebular material surrounds a massive, hot, young star in its formative years. Central filaments of cosmic dust glow with a reddish photoluminescence as some dust grains effectively convert the star's invisible ultraviolet radiation to visible red light. Yet the dominant color of the central nebula is blue, characteristic of dust grains reflecting starlight. Dark, obscuring clouds of dust and cold molecular gas are present on the left of the image, and lead the eye to see other convoluted and fantastic shapes. Infrared observations indicate that this nebula may contain complex carbon molecules known as PAHs. As shown here, the bright blue portion of the Iris Nebula is about six light-years across.

Astronomy Picture Of The Day

2007-06-25T06:16:00.001-07:00

The International Space Station Expands Again

Explanation: The developing International Space Station (ISS) has changed its appearance again. During the past week, the Space Shuttle Atlantis visited the ISS and added pieces of the Integrated Truss Structure that mirrored those added in September 2006, including a second impressively long array of solar panels. The entire array of expansive solar panels are visible at the edges of the above image taken by the Shuttle Atlantis Crew after leaving the ISS to return to Earth. The world's foremost space outpost can be seen developing over the past several years by comparing the above image to past images. Also visible above are many different types of modules, a robotic arm, another impressive set of solar panels, and a supply ship. Construction began on the ISS in 1998.

Astronomy Picture Of The Day

2007-06-24T01:58:00.000-07:00

All the Colors of the Sun

Explanation: It is still not known why the Sun's light is missing some colors. Shown above are all the visible colors of the Sun, produced by passing the Sun's light through a prism-like device. The above spectrum was created at the McMath-Pierce Solar Observatory and shows, first off, that although our yellow-appearing Sun emits light of nearly every color, it does indeed appear brightest in yellow-green light. The dark patches in the above spectrum arise from gas at or above the Sun's surface absorbing sunlight emitted below. Since different types of gas absorb different colors of light, it is possible to determine what gasses compose the Sun. Helium, for example, was first discovered in 1870 on a solar spectrum and only later found here on Earth. Today, the majority of spectral absorption lines have been identified - but not all.

Astronomy Picture Of The Day

2007-06-23T02:05:00.000-07:00

3D Barringer Meteorite Crater

Explanation: Baringer Meteorite Crater, near Winslow, Arizona, is one of the best known impact craters on planet Earth. View this color stereo anaglyph with red/blue glasses to get a dramatic sense of the crater's dimensions -- one mile wide, and up to 570 feet deep. Historically, this crater is the first recognized to be caused by an impact rather than a volcanic eruption. Modern research indicates that the impactor responsible, a 300,000 ton nickel-iron meteor, struck some 50,000 years ago. Estimates suggest that it was about 130 feet across and was traveling over 26,000 miles per hour. For comparison, the asteroid or comet impactor that created the Chicxulub crater 65 million years ago, and is thought to have caused the extinction of the dinosaurs, was 6 to 12 miles across.

U.S. company says it grows embryo-safe stem cells

2007-06-22T12:51:00.000-07:00

WASHINGTON, U.S. - Researchers at a U.S. company trying to push the margins of stem cell research said on Friday they had grown human embryonic stem cells using a non-controversial method that did not harm the embryos.

Read the whole story at www.reuters.com

Astronomy Picture Of The Day

2007-06-22T06:31:00.001-07:00

Friday, June 22, 2007

Small Worlds Ceres and Vesta

Explanation: Ceres and Vesta are, respectively, only around 950 kilometers and 530 kilometers in diameter - about the size of Texas and Arizona. But they are two of the largest of over 100,000 minor bodies orbiting in the main asteroid belt between Mars and Jupiter. These remarkably detailed Hubble Space Telescope images show brightness and color variations across the surface of the two small worlds. The variations could represent large scale surface features or areas of different compositon. The Hubble image data will help astronomers plan for a visit by the asteroid-hopping Dawn spacecraft, scheduled for launch on July 7 and intended to orbit first Vesta and then Ceres after a four year interplanetary cruise. Though Shakespeare might not have been impressed, nomenclature introduced by the International Astronomical Union in 2006 classifies nearly spherical Ceres as a dwarf planet.

Video; Waking Life: Evolution

2007-06-22T00:45:00.000-07:00

The Greenest Green Fuel

2007-06-21T03:12:00.001-07:00

"Looking for a clean fuel that grows anywhere, needs only sunlight and water, and could produce enough oil to free the U.S. from its petroleum addiction? Here’s one start-up’s plan for converting oil from algae—yes, algae"
Read more at www.popsci.com

Astronomy Picture Of The Day

2007-06-21T00:07:00.000-07:00

Thursday, June 21, 2007

Stars and the Solstice Sun

Explanation: If you could turn off the atmosphere's ability to scatter overwhelming sunlight, today's daytime sky might look something like this ... with the Sun surrounded by the stars of the constellations Taurus and Gemini. Of course, today is the Solstice. Traveling along the ecliptic plane, the Sun is at its northernmost position in planet Earth's sky, marking the astronomical beginning of summer in the north. Accurate for the exact time of today's Solstice, this composite image also shows the Sun at the proper scale (about the angular size of the Full Moon). Open star cluster M35 is to the Sun's left, and the other two bright stars in view are Mu and Eta Geminorum. Digitally superimposed on a nighttime image of the stars, the Sun itself is a composite of a picture taken through a solar filter and a series of images of the solar corona recorded during the solar eclipse of February 26, 1998 by Andreas Gada.

Video; Great Thinkers: Secular Quotes

2007-06-20T10:26:00.001-07:00

Astronomy Picture Of The Day

2007-06-20T00:08:00.000-07:00

Wednesday, June 20, 2007

A Daylight Eclipse of Venus

Explanation: Something was about to happen. Just two days ago, two of the three celestial objects easily visible during the day appeared to collide. But actually, Earth's Moon passed well in front of the distant planet Venus. The occultation was caught from Switzerland in the hours before sunset. Moments after this image was taken, the Moon, visible as the crescent on the right of the above image, eclipsed Venus, appearing in gibbous phase on the lower left. Clouds that once threatened to obscure the whole event, were visible on the far left. About 90 minutes later, Venus re-appeared just to the right of the bright crescent.

Video; John Lennon - Imagine

2007-06-19T06:08:00.001-07:00

Astronomy Picture Of The Day

2007-06-19T00:40:00.000-07:00

Tuesday, June 19, 2007

Eris: More Massive than Pluto

Explanation: Eris, a dwarf planet currently orbiting the Sun at about twice Pluto's distance, has been measured to have about 27 percent more mass than Pluto. The mass was calculated by timing the orbit of Eris' moon Dysnomia. Images taken with a ground-based Keck telescope, when combined with existing images taken by Hubble Space Telescope, show that Dysnomia has a nearly circular orbit lasting about 16 days. Cataloged as 2003 UB313 only a year ago, infrared images also showed previously that Eris is actually larger in diameter than Pluto. The plane of Eris' orbit is well out of the plane of the Solar System's planets. In the above drawing, a scientific artist has imagined Eris and Dysnomia orbiting our distant Sun. No space missions are currently planned to Eris, although the robotic New Horizons spacecraft bound for Pluto has recently passed Jupiter.

Astronomy Picture Of The Day

2007-06-18T05:23:00.000-07:00

Monitoring M2-9

Explanation: Exploring the myriad shapes found in the cosmic zoo of planetary nebulae, some astronomers have focused on the intriguing example of M2-9. About 2,100 light-years away and over one light-year across, M2-9 is known as a twin jet or butterfly nebula in reference to its striking bipolar symmetry. Monitoring M2-9 over many years from ground based telescopes has revealed the dramatic west to east (left to right) progression of features illustrated in this collage. The apparent motion could well be caused by an energetic rotating beam sweeping across the nebular material. Astronomers argue that the beam is collimated by interacting stellar winds in a double star system at the center of M2-9. The binary system of a giant star and hot white dwarf star orbit each other about once every 120 years. Click on the image to watch an animated gif of M2-9.

U.S.-led air raid kills seven Afghan children

2007-06-18T03:07:00.000-07:00

Kabul, Afghanistan - At least seven children were killed in a U.S.-led coalition air strike on a religious school in Afghanistan, the coalition said on Monday, amid rising anger over civilian deaths from foreign military operations.
-
Read the full story at reuters.com
By Sayed Salahuddin

Astronomy Picture Of The Day

2007-06-17T00:47:00.000-07:00

Analemma over the Ukraine

Explanation: If you took a picture of the Sun at the same time each day, would it remain in the same position? The answer is no, and the shape traced out by the Sun over the course of a year is called an analemma. The Sun's apparent shift is caused by the Earth's motion around the Sun when combined with the tilt of the Earth's rotation axis. The Sun will appear at its highest point of the analemma during summer and at its lowest during winter. Analemmas created from different Earth latitudes would appear at least slightly different, as well as analemmas created at a different time each day. The analemma pictured was built up by Sun photographs taken from 1998 August through 1999 August from Ukraine. The foreground picture from the same location was taken during the early evening in 1999 July.

Astronomy Picture Of The Day

2007-06-16T03:29:00.000-07:00

Lunar Orbiter Views Crater Copernicus

Explanation: To prepare for the Apollo landings, five Lunar Orbiter spacecraft were launched during 1966 and 1967 to gather detailed images of our fair planet's large, natural satellite. Dramatic views returned by the spacecraft cameras included this stark moonscape. The mosaic of 93 kilometer wide impact crater Copernicus features central peaks rising above the crater floor and rugged crater walls.

Astronomy Picture Of The Day

2007-06-15T03:52:00.000-07:00

Messier 96

Explanation: Dust lanes seem to swirl around the core of Messier 96 in this colorful, detailed portrait of the beautiful island universe. Of course M96 is a spiral galaxy, and counting the faint arms extending beyond the brighter central region it spans 100 thousand light-years or so, about the size of our own Milky Way. M96 is known to be 38 million light-years distant, a dominant member of the Leo I galaxy group. Background galaxies and smaller Leo I group members can be found by examining the picture, but accomplished astro-imager Adam Block notes he is most intrigued by the edge-on spiral galaxy that apparently lies behind the outer spiral arm near the 10 o'clock position. The edge-on spiral appears to be about 1/5 the size of M96. If the spiral is similar in actual size to M96, then it lies about 5 times farther away.

Astronomy Picture Of The Day

2007-06-14T03:56:00.000-07:00

vdB 152: Reflection Nebula in Cepheus

Explanation: Described as a "dusty curtain" or "ghostly apparition", mysterious reflection nebula vdB 152 really is very faint. It lies about 1400 light-years away, along the northern Milky Way in the royal constellation Cepheus. Near the edge of a large molecular cloud, pockets of cosmic dust in the region block light from background stars or scatter light from the embedded bright star (top) giving parts of the nebula a characteristic blue color. Ultraviolet light from the star is also thought to cause a dim reddish luminescence in the nebular dust. Though stars do form in molecular clouds, this star seems to have only accidentally wandered into the area, as its measured velocity through interstellar space is very different from the cloud's velocity. This deep telescopic image spans about 7 light-years at the estimated distance of vdB 152.

Astronomy Picture Of The Day

2007-06-13T05:30:00.001-07:00

Warped Sky: Star Trails Panorama

Explanation: What's happened to the sky? A time warp, of sorts, and a digital space warp too. The time warp occurs because the above image captured in a single frame a four hour exposure of the night sky. Prominent and picturesque star trails are visible. The space warp occurs because the above image is actually a full 360 degree panorama, horizontally compressed to fit your browser. As the Earth rotated, stars appeared to circle both the South Celestial Pole, on the left, and the North Celestial Pole, which occurs just below the horizon on the right. The above image captured the sky over Mudgee, New South Wales, Australia, including the domes of two large telescopes artificially lit by red light. A horizontally unwarped image is visible by clicking on the above image.

Astronomy Picture Of The Day

2007-06-12T02:58:00.001-07:00

Shuttle Plume

Explanation: What kind of cloud is that? Not a naturally occurring one. Pictured is the drifting smoke plume left over from last Friday's launch of the Space Shuttle Atlantis. The twisted plume was captured shortly after launch high above NASA's massive Vehicle Assembly Building, the largest single story building in the world. Rockets frequently create picturesque plumes during launch. The Space Shuttle is currently visiting the International Space Station and delivering a new backbone truss segment to the continually developing and occupied spaceport. This trip, officially labeled STS-117, is the 118th space shuttle flight overall and the 28th for the Atlantis Orbiter.

Astronomy Picture Of The Day

2007-06-11T03:52:00.001-07:00

The Merope Reflection Nebula

Explanation: Reflection nebulas reflect light from a nearby star. Many small carbon grains in the nebula reflect the light. The blue color typical of reflection nebula is caused by blue light being more efficiently scattered by the carbon dust than red light. The brightness of the nebula is determined by the size and density of the reflecting grains, and by the color and brightness of the neighboring star(s). NGC 1435, pictured above, surrounds Merope (23 Tau), one of the brightest stars in the Pleiades (M45). The Pleiades nebulosity is caused by a chance encounter between an open cluster of stars and a molecular cloud.

Astronomy Picture Of The Day

2007-06-10T03:59:00.000-07:00

Looking Back at an Eclipsed Earth

Explanation: Here is what the Earth looks like during a solar eclipse. The shadow of the Moon can be seen darkening part of Earth. This shadow moved across the Earth at nearly 2000 kilometers per hour. Only observers near the center of the dark circle see a total solar eclipse - others see a partial eclipse where only part of the Sun appears blocked by the Moon. This spectacular picture of the 1999 August 11 solar eclipse was one of the last ever taken from the Mir space station. The two bright spots that appear on the upper left are possibly Jupiter and Saturn, although this has yet to be proven. Mir was deorbited in a controlled re-entry in 2001.

Astronomy Picture Of The Day

2007-06-09T17:00:00.000-07:00

Globular Star Cluster M3

Explanation: This immense ball of half a million stars older than the Sun lies over 30,000 light-years away. Cataloged as M3 (and NGC 5272), it is one of about 150 globular star clusters that roam the halo of our Milky Way Galaxy. Even in this impressively sharp image, individual stars are difficult to distinguished in the densely packed core, but colors are apparent for the bright stars on the cluster's outskirts. M3's many cool "red" giant stars take on a yellowish cast, while hotter giants and pulsating variable stars look light blue. A closer look at the deep telescopic view also reveals a host of background galaxies. Itself about 200 light-years across, the giant star cluster is a relatively bright, easy target for binoculars in the northern constellation Canes Venatici, The Hunting Dogs, and not far from Arcturus.

Quotes; Government

2007-06-08T23:23:00.000-07:00

Government, which does not and did not grant us our rights, must not now seek to deny them by using fear as its justification.
- Malcolm Wallop

A government is the most dangerous threat to man's rights: it holds a legal monopoly on the use of physical force against legally disarmed victims.
- Ayn Rand

A democracy is nothing more than mob rule, where fifty-one percent of the people may take away the rights of the other forty-nine.
- Thomas Jefferson

The government, which was designed for the people, has got into the hands of the bosses and their employers, the special interests. An invisible empire has been set up above the forms of democracy.
- Woodrow Wilson

The danger is not that a particular class is unfit to govern. Every class is unfit to govern.
- Lord Acton

Government is an unnecessary evil. Human beings, when accustomed to taking responsibility for their own behavior, can cooperate on a basis of mutual trust and helpfulness.
- Fred Woodworth

Atheist

2007-06-08T22:27:00.000-07:00

This is NOT an argument for atheism... It's a defense of atheists.

Consciousness

2007-06-08T01:59:00.000-07:00

an animation of Spirit

Astronomy Picture Of The Day

2007-06-08T01:17:00.000-07:00

Friday, June 8, 2007
Markarian's Eyes

Explanation: Across the heart of the Virgo Galaxy Cluster lies a string of galaxies known as Markarian's Chain. Prominent in Markarian's Chain are these two interacting galaxies, NGC 4438 (left) and NGC 4435 - also known as The Eyes. About 50 million light-years away, the two galaxies appear to be about 100,000 light-years apart in this sharp close-up, but have likely approached to within an estimated 16,000 light-years of each other in their cosmic past. Gravitational tides from the close encounter have ripped away at their stars, gas, and dust. The more massive NGC 4438 managed to hold on to much of the material torn out in the collision, while material from the smaller NGC 4435 was more easily lost. The remarkably deep image of this crowded region of the universe also includes many more distant background galaxies.

Astronomy Picture Of The Day

2007-06-07T18:12:00.000-07:00

Great Mountain Moonrise

Explanation: On May 31st, a gorgeous Full Moon rose over Uludag Mountain in Bursa Province, Turkey. This alluring telephoto view of the twilight scene is a composite of images taken roughly every two minutes beginning shortly after Sunset, following the rising Moon as it moves up and to the right. Of course, as the Moon rises it gets brighter and changes color, becoming less reddened as the sight-line through the dense atmosphere is steadily reduced. Each of the final two exposures also captured a rising planet Jupiter. Like the Full Moon, the bright, wandering planet is nearly opposite the Sun in Earth's sky and was caught on the lefthand side of the picture in two places, just above a small peak in the mountain side. Intriguingly, some considered this Full Moon a Blue Moon.

Video; The Universe From Hubble

2007-06-07T16:44:00.000-07:00

Astronomy Picture Of The Day

2007-06-06T01:44:00.000-07:00

Dust Sculptures in the Rosette Nebula

Explanation: What creates the cosmic dust sculptures in the Rosette Nebula? Noted for the common beauty of its overall shape, parts of the Rosette Nebula, also known as NGC 2244, show beauty even when viewed up close. Visible above are globules of dark dust and gas that are slowly being eroded away by the energetic light and winds by nearby massive stars. Left alone long enough, the molecular-cloud globules would likely form stars and planets. The above image was taken in very specific colors of Sulfur (shaded red), Hydrogen (green), and Oxygen (blue). The Rosette Nebula spans about 50 light-years across, lies about 4,500 light-years away, and can be seen with a small telescope towards the constellation of the Unicorn (Monoceros).

Astronomy Picture Of The Day

2007-06-05T23:53:00.001-07:00

Jet Approaching a Crescent Moon

Explanation: No natural clouds appear in this picture. On the left, an airplane cruises through the atmosphere leaving a contrail in its wake. The contrail would normally appear white, but the large volume of air toward the setting Sun preferentially knocks away blue light, giving the reflected trail a bright orange hue. Far in the distance, to the right of the plane, is the young Moon. This vast world shows only a sliver of itself because the Sun is nearly lined up behind it. The above image is framed by an eerie gray sky, too far from day to be blue, too far from night to be black. Within minutes the impromptu sky show ended. The plane crossed the Moon. The contrail dispersed. The Sun set. The Moon set. The sky faded to black, only to reveal thousands of stars that had been hiding below the gray din.

Astronomy Picture Of The Day

2007-06-04T23:09:00.001-07:00

IC 4603: Reflection Nebula in Ophiuchius

Explanation: Why does this starfield photograph resemble an impressionistic painting? The effect is created not by digital trickery but by large amounts of interstellar dust. Dust, minute globs rich in carbon and similar in size to cigarette smoke, frequently starts in the outer atmospheres of large, cool, young stars. The dust is dispersed as the star dies and grows as things stick to it in the interstellar medium. Dense dust clouds are opaque to visible light and can completely hide background stars. For less dense clouds, the capacity of dust to preferentially reflect blue starlight becomes important, effectively blooming the stars blue light out and marking the surrounding dust. Nebular gas emissions, typically brightest in red light, can combine to form areas seemingly created on an artist's canvas. Photographed above is roughly four square degrees of the nebula IC 4603 near the bright star Antares toward the constellation of Ophiuchus.

Biodiesel, What Is It?

2007-06-04T15:39:00.000-07:00

By: Mark Allen
In today's world, one can hardly escape the subject of fuel prices and fuel supply. For a number of different reasons people have turned from standard petroleum based fuel sources and looked for a reliable alternative-fuel. Biodiesel is one such fuel that experts and enthusiasts have embraced as not only their idea of a fuel of the future, but is also their choice for a fuel for today. But, what is Biodiesel?

Biodiesel is a fuel containing some of the same traits as conventional diesel fuel. Biodiesel is made from high quality vegetable oils through a manufacturing process that can be done on a large scale - such as a refinery, or on a small scale - such as a home Biodiesel kit. The primary use for Biodiesel right now is as a substitute for petroleum based diesel fuel.

In different parts of the world, different plants are used as the source for the vegetable oil that is made into Biodiesel. Theoretically, any vegetable grown can be broken down and turned into Biodiesel, but right now most Biodiesel producers use one primary crop as their source. In America, the primary crop grown for Biodiesel production is corn. Corn, being one of the more common crops grown in American, provides a readily available supply of vegetable matter for Biodiesel manufacturers. In much of Europe, rapeseed is used in the production of Biodiesel. And, in Southeast Asia the primary plant grown for the manufacture of Biodiesel is Soybeans. After going through the manufacturing process, there is little difference in the properties of Biodiesel made from one plant over another.

The process used to manufacture Biodiesel from pure vegetable oil is called ester interchange. In the process the vegetable oil is combined with a much smaller amount of Methanol. Methanol can be manufactured by the fermentation of starch or sugar and it can also be produced from natural gas. The vegetable oil and methanol are placed in a small quantity of an alkaline catalyst and it is in this process that the chemical makeup of the vegetable oil is altered. The result is a clean burning fuel with a viscosity (flow properties) approximating that of standard diesel fuel. During this process, approximately 90% of what is manufactured is Biodiesel fuel, while the remaining 10% is in the form of the glycerine that was broken down from the vegetable matter. This glycerine can also be used in other applications in the chemical industry, making the manufacture of Biodiesel practically waste-free.

The current uses for Biodiesel are mainly limited to that of being a cleaner burning replacement for petroleum based diesel fuel. Biodiesel can be both economically viable and highly efficient for most mobile applications. There will be some performance and usage differences between diesel and Biodiesel and they will vary from vehicle to vehicle as expected. It is possible for most modern diesel engines to burn standard Biodiesel. Currently, Biodiesel is also marketed as a Biodiese/Ethanol mix or a Biodiesel/Diesel mix.

Still a young industry by any measure, Biodiesel is on it's way to becoming one of the brightest lights in the search for a viable alternative-fuel.

Author Bio
Mark Allen is a supporter of finding a viable alternative fuel source. Learn more at BiodieselPlans.info

Article Source: http://www.ArticleGeek.com - Free Website Content

Terrorized by 'War on Terror'

2007-06-04T11:47:00.000-07:00

How a Three-Word Mantra Has Undermined America

By Zbigniew Brzezinski
Sunday, March 25, 2007; Page B01
Washington Post

The "war on terror" has created a culture of fear in America. The Bush administration's elevation of these three words into a national mantra since the horrific events of 9/11 has had a pernicious impact on American democracy, on America's psyche and on U.S. standing in the world. Using this phrase has actually undermined our ability to effectively confront the real challenges we face from fanatics who may use terrorism against us.

The damage these three words have done -- a classic self-inflicted wound -- is infinitely greater than any wild dreams entertained by the fanatical perpetrators of the 9/11 attacks when they were plotting against us in distant Afghan caves. The phrase itself is meaningless. It defines neither a geographic context nor our presumed enemies. Terrorism is not an enemy but a technique of warfare -- political intimidation through the killing of unarmed non-combatants.

But the little secret here may be that the vagueness of the phrase was deliberately (or instinctively) calculated by its sponsors. Constant reference to a "war on terror" did accomplish one major objective: It stimulated the emergence of a culture of fear. Fear obscures reason, intensifies emotions and makes it easier for demagogic politicians to mobilize the public on behalf of the policies they want to pursue. The war of choice in Iraq could never have gained the congressional support it got without the psychological linkage between the shock of 9/11 and the postulated existence of Iraqi weapons of mass destruction. Support for President Bush in the 2004 elections was also mobilized in part by the notion that "a nation at war" does not change its commander in chief in midstream. The sense of a pervasive but otherwise imprecise danger was thus channeled in a politically expedient direction by the mobilizing appeal of being "at war."

To justify the "war on terror," the administration has lately crafted a false historical narrative that could even become a self-fulfilling prophecy. By claiming that its war is similar to earlier U.S. struggles against Nazism and then Stalinism (while ignoring the fact that both Nazi Germany and Soviet Russia were first-rate military powers, a status al-Qaeda neither has nor can achieve), the administration could be preparing the case for war with Iran. Such war would then plunge America into a protracted conflict spanning Iraq, Iran, Afghanistan and perhaps also Pakistan.

The culture of fear is like a genie that has been let out of its bottle. It acquires a life of its own -- and can become demoralizing. America today is not the self-confident and determined nation that responded to Pearl Harbor; nor is it the America that heard from its leader, at another moment of crisis, the powerful words "the only thing we have to fear is fear itself"; nor is it the calm America that waged the Cold War with quiet persistence despite the knowledge that a real war could be initiated abruptly within minutes and prompt the death of 100 million Americans within just a few hours. We are now divided, uncertain and potentially very susceptible to panic in the event of another terrorist act in the United States itself.

That is the result of five years of almost continuous national brainwashing on the subject of terror, quite unlike the more muted reactions of several other nations (Britain, Spain, Italy, Germany, Japan, to mention just a few) that also have suffered painful terrorist acts. In his latest justification for his war in Iraq, President Bush even claims absurdly that he has to continue waging it lest al-Qaeda cross the Atlantic to launch a war of terror here in the United States.

Such fear-mongering, reinforced by security entrepreneurs, the mass media and the entertainment industry, generates its own momentum. The terror entrepreneurs, usually described as experts on terrorism, are necessarily engaged in competition to justify their existence. Hence their task is to convince the public that it faces new threats. That puts a premium on the presentation of credible scenarios of ever-more-horrifying acts of violence, sometimes even with blueprints for their implementation.

That America has become insecure and more paranoid is hardly debatable. A recent study reported that in 2003, Congress identified 160 sites as potentially important national targets for would-be terrorists. With lobbyists weighing in, by the end of that year the list had grown to 1,849; by the end of 2004, to 28,360; by 2005, to 77,769. The national database of possible targets now has some 300,000 items in it, including the Sears Tower in Chicago and an Illinois Apple and Pork Festival.

Just last week, here in Washington, on my way to visit a journalistic office, I had to pass through one of the absurd "security checks" that have proliferated in almost all the privately owned office buildings in this capital -- and in New York City. A uniformed guard required me to fill out a form, show an I.D. and in this case explain in writing the purpose of my visit. Would a visiting terrorist indicate in writing that the purpose is "to blow up the building"? Would the guard be able to arrest such a self-confessing, would-be suicide bomber? To make matters more absurd, large department stores, with their crowds of shoppers, do not have any comparable procedures. Nor do concert halls or movie theaters. Yet such "security" procedures have become routine, wasting hundreds of millions of dollars and further contributing to a siege mentality.

Government at every level has stimulated the paranoia. Consider, for example, the electronic billboards over interstate highways urging motorists to "Report Suspicious Activity" (drivers in turbans?). Some mass media have made their own contribution. The cable channels and some print media have found that horror scenarios attract audiences, while terror "experts" as "consultants" provide authenticity for the apocalyptic visions fed to the American public. Hence the proliferation of programs with bearded "terrorists" as the central villains. Their general effect is to reinforce the sense of the unknown but lurking danger that is said to increasingly threaten the lives of all Americans.

The entertainment industry has also jumped into the act. Hence the TV serials and films in which the evil characters have recognizable Arab features, sometimes highlighted by religious gestures, that exploit public anxiety and stimulate Islamophobia. Arab facial stereotypes, particularly in newspaper cartoons, have at times been rendered in a manner sadly reminiscent of the Nazi anti-Semitic campaigns. Lately, even some college student organizations have become involved in such propagation, apparently oblivious to the menacing connection between the stimulation of racial and religious hatreds and the unleashing of the unprecedented crimes of the Holocaust.

The atmosphere generated by the "war on terror" has encouraged legal and political harassment of Arab Americans (generally loyal Americans) for conduct that has not been unique to them. A case in point is the reported harassment of the Council on American-Islamic Relations (CAIR) for its attempts to emulate, not very successfully, the American Israel Public Affairs Committee (AIPAC). Some House Republicans recently described CAIR members as "terrorist apologists" who should not be allowed to use a Capitol meeting room for a panel discussion.

Social discrimination, for example toward Muslim air travelers, has also been its unintended byproduct. Not surprisingly, animus toward the United States even among Muslims otherwise not particularly concerned with the Middle East has intensified, while America's reputation as a leader in fostering constructive interracial and interreligious relations has suffered egregiously.

The record is even more troubling in the general area of civil rights. The culture of fear has bred intolerance, suspicion of foreigners and the adoption of legal procedures that undermine fundamental notions of justice. Innocent until proven guilty has been diluted if not undone, with some -- even U.S. citizens -- incarcerated for lengthy periods of time without effective and prompt access to due process. There is no known, hard evidence that such excess has prevented significant acts of terrorism, and convictions for would-be terrorists of any kind have been few and far between. Someday Americans will be as ashamed of this record as they now have become of the earlier instances in U.S. history of panic by the many prompting intolerance against the few.

In the meantime, the "war on terror" has gravely damaged the United States internationally. For Muslims, the similarity between the rough treatment of Iraqi civilians by the U.S. military and of the Palestinians by the Israelis has prompted a widespread sense of hostility toward the United States in general. It's not the "war on terror" that angers Muslims watching the news on television, it's the victimization of Arab civilians. And the resentment is not limited to Muslims. A recent BBC poll of 28,000 people in 27 countries that sought respondents' assessments of the role of states in international affairs resulted in Israel, Iran and the United States being rated (in that order) as the states with "the most negative influence on the world." Alas, for some that is the new axis of evil!

The events of 9/11 could have resulted in a truly global solidarity against extremism and terrorism. A global alliance of moderates, including Muslim ones, engaged in a deliberate campaign both to extirpate the specific terrorist networks and to terminate the political conflicts that spawn terrorism would have been more productive than a demagogically proclaimed and largely solitary U.S. "war on terror" against "Islamo-fascism." Only a confidently determined and reasonable America can promote genuine international security which then leaves no political space for terrorism.

Where is the U.S. leader ready to say, "Enough of this hysteria, stop this paranoia"? Even in the face of future terrorist attacks, the likelihood of which cannot be denied, let us show some sense. Let us be true to our traditions.

-

Zbigniew Brzezinski, national security adviser to President Jimmy Carter, is the author most recently of "Second Chance: Three Presidents and the Crisis of American Superpower" (Basic Books).