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Saturn’s moon Rhea and the shadow of Saturn’s rings
In this beautiful image, Saturn itself is in the background. The moon Rhea is in silhouette. The dark lines are the shadow of Saturn's rings.
December 4, 2011
December 4 is Mountain Day 2011
Going on simultaneously with COP 17, Mountain Day calls attention to climate change impacts on mountain people in the Hindu Kush-Himalayan high mountain region.
December 4, 2011
Astronomers find strange new species of red galaxies
The four very red galaxies seen by NASA's Spitzer Space Telescope might be a 'missing link' in galaxy evolution, CfA astronomers say.
December 3, 2011
Science news quicks – December 3, 2011
Quick recaps of some of this week's science news from EarthSky. Read about synesthesia, dreaming, a famous violin, and the fate of a solar sail experiment.
December 3, 2011
How ‘skin bones’ helped large dinosaurs survive
Bones contained entirely within the skin of some of the largest dinosaurs on Earth might have stored vital minerals to help them survive tough times.
December 3, 2011
Martian avalanches may be caused by meteors
Orbiting spacecraft have now seen avalanches of dust on the surface of the planet Mars. Martian avalanches and quakes might be caused by meteor airbursts.
December 2, 2011
Strong winds cause damage in southwestern United States
Parts of the western United States felt effects of strong winds this week as a powerful storm system slid through the southwestern United States causing damage.
December 2, 2011
Video: Glide over Asteroid Vesta in 3D
Get out your 3D glasses and glide over the giant asteroid Vesta with NASA's Dawn spacecraft. See the surface as if you were there!
December 2, 2011
E.O. Wilson on the future of biology
Harvard biologist Edward O. Wilson talked to EarthSky about advances we might see in in the future of biology in the 21st century.
December 2, 2011
Martian gullies not all formed by flowing water
Some Martian gullies at the poles might have formed when a seasonal accumulation of carbon dioxide frost sublimed - turned directly from a solid to a gas.
December 2, 2011
