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Posts by
Editors of EarthSky
NASA photos suggest water might be flowing on Mars
New clues about the mysterious streaks that appear on the surface of Mars during warm weather. Scientists they might be caused by flowing water.
February 11, 2014
The oldest known star in the universe
The ancient star, about 6,000 light years from Earth, formed 13.7 billion years ago, shortly after the Big Bang. It's the oldest star yet found.
February 10, 2014
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
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
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
A uniquely human brain area?
It's called the ventrolateral frontal cortex. It's a part of the brain involved in human processes, such as strategic planning and multi-tasking.
February 6, 2014
Hearing improves after a week of blindness
A study suggests that the loss of one sense - vision - can improve another sense - in this case, hearing - by altering the brain circuit.
February 6, 2014
Kepler discovers a wobbly planet with weird seasons
On Earth, the cycle of precession lasts 26,000 years. The planet Kepler-413b precesses, or wobbles, wildly on its spin axis, in a cycle of only 11 years.
February 5, 2014
Dinosaur discovered in 2008 now known among largest land animals
Bone structure indicates that it was a juvenile, estimated to be 60 feet (18 meters) long. An adult would have been much larger.
February 3, 2014
