Monday, December 27, 2010
One Million Galaxies
Are the nearest galaxies distributed randomly? A plot of over one million of the brightest "extended sources" detected by the Two Micron All Sky Survey (2MASS) shows that they are not. The vast majority of these infrared extended sources are galaxies. Visible above is an incredible tapestry of structure that provides limits on how the universe formed and evolved. Many galaxies are
Sunday, December 26, 2010
Sideways Orion Over Snowy Ireland
Orion always comes up sideways ... and was caught in the act earlier this month by over a snowy landscape in Donegal, Ireland. To compose this serene picture, the photographer found a picturesque setting to the east, waited until after sunset, and then momentarily lit the foreground with a flashlight. The three bright stars in Orion's belt stand in a nearly vertical line above the snow
Saturday, December 25, 2010
Decorating the Sky
Bright stars, clouds of dust and glowing nebulae decorate this cosmic scene, a skyscape just north of Orion's belt. Close to the plane of our Milky Way Galaxy, the wide field view spans about 5.5 degrees. Striking bluish M78, a reflection nebula, is at the left. M78's tint is due to dust preferentially reflecting the blue light of hot, young stars. In colourful contrast, the red sash of
Apollo 8: Christmas at the Moon
Christmas Eve, 1968. As one of the most turbulent, tragic years in American history drew to a close, millions around the world were watching and listening as the Apollo 8 astronauts -- Frank Borman, Jim Lovell and Bill Anders -- became the first humans to orbit another world.
As their command module floated above the lunar surface, the astronauts beamed back images of the moon and Earth and took
As their command module floated above the lunar surface, the astronauts beamed back images of the moon and Earth and took
Friday, December 24, 2010
Star Trails in the North
Pointing skyward, the wall of this ruined Viking church still stands after a thousand winters, near the town of Vallentuna, Sweden. The time exposure records the scene on December 14th as stars leave graceful arcing trails during a long night, reflecting planet Earth's daily rotation on its axis. The Earth's axis points toward Polaris, the North Star, near the centre of the concentric trails.
Thursday, December 23, 2010
NASA Hosts Planet-Finding Tweetup in California's Silicon Valle
NASA will give 100 of its Twitter followers an insider look at its planet-hunting Kepler spacecraft and the agency's Ames Research Center on Feb. 11 in Moffett Field in California.
For the first time, NASA's Twitter followers are being invited to Ames to learn about planetary discoveries from Kepler and the science flights of NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA)
For the first time, NASA's Twitter followers are being invited to Ames to learn about planetary discoveries from Kepler and the science flights of NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA)
GOES Satellites Capture Holiday Weather Travel Conditions
Data from the GOES-13 and GOES-11 satellites were used to create a full image of the continental U.S. on Dec. 23 at 1145 UTC (6:45 a.m. EST) as travelers make their way across the country to their holiday destinations. The area clouds from the U.S. southwest stretching north are associated with a low pressure area over Colorado. The clouds over eastern New England are associated with a low
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