Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
What killed the woolly mammoth? New clues.
Ten thousand years ago, large mammals of the Arctic, like the woolly mammoth, went extinct. What caused it? Climate change? Disease? Over-hunting by humans?
February 10, 2014
Savannah’s rubber fire and migrating birds
Dramatic photo showing a towering cloud of black smoke from the rubber fire in Savannah, as migrating birds move over the U.S. South.
February 9, 2014
Earth seen from Mars. Mars seen from Earth
This is cool, too, from the blog ridingwithrobots.org. Earth seen from Mars. Mars seen from Earth. Click on the picture for a larger view.
February 9, 2014
What if the sun disappeared?
We wouldn't know the sun was gone for eight-and-a-half minutes. Then Earth would head off in a straight line, into eternal night.
February 8, 2014
View from space: Sochi Winter Olympic sites
A satellite view of the skiing and snowboarding sites for the Sochi Winter Olympic Games.
February 7, 2014
Video: Will this go faster than light?
Light speed is the ultimate speed in our universe. Why we haven't been able to build - or even conceive of - a contraption that goes faster than light.
February 7, 2014
View from space: Crescent moon and Earth’s atmosphere
Astronaut's view of crescent moon rising and the cusp of Earth's atmosphere.
February 7, 2014
Catch-and-release fishing creates too much trauma for some sharks
When a shark swims away after being caught by a catch-and-release sport fisherman, that doesn't mean the shark will survive the encounter.
February 7, 2014
Why does this brown dwarf have such strangely red skies ?
Brown dwarfs straddle the line between stars and planets. This one caught researchers' attention for its extremely red appearance. Turns out its atmosphere is laden with dust.
February 7, 2014
Curiosity rover sees Earth and moon from Mars
Earth is now an evening "star" as seen in the sky of Mars. A closer look reveals a double world.
February 7, 2014
