Researchers Reveal How Climate Change Killed Mars
Mars used to be much warmer and wetter than it is today. Scientists are unraveling the mystery of why it dried out.
Space
Not My Job: We Quiz Cosmos Expert Neil deGrasse Tyson On Cosmetology
Sure, he knows a lot about stars, but what does he know about hair stylists and spa experts?
Take The Long Way Home: Spacefarers' Journey Prolonged By Space Junk
Three spacefarers heading to the International Space Station this week had to take a detour in order to avoid space debris. Researchers have yet to solve the problem of orbiting junk.
NASA To Publish At Least A Dozen Daily Images Of Earth From Space
The photos come from a camera on a satellite, once called "GoreSat" after former Vice President Al Gore, who initially proposed the project in the late 1990s.
Distant Pluto Comes To Life
When a probe skimmed past the dwarf planet in July, researchers expected to see a cold, dead world. New results published today show that Pluto is an active place.
New Hubble Images Show Jupiter's Great Red Spot Is Still Shrinking
But, using images from the Hubble Space Telescope, scientists have learned the great storm is putting up a fight because it is now shrinking at a slower rate.
'Buckyballs' Solve Century-Old Mystery About Interstellar Space
Scientists have long wondered what's in the wispy cloud of gas floating in the space between the stars, absorbing starlight. Turns out it's a form of carbon named after architect Buckminster Fuller.
Why Is The Sky Blue? (On Pluto, That Is)
Pluto's atmosphere has a blue haze, in a new photo from the New Horizons probe. But the particles causing that color are probably gray or red — and the planet's surface has red ice.
NASA Rover Finds Evidence That Mars Once Had Lakes
A new study suggests the Red Planet had some blue on it about 3.5 billion years ago.
The Year In Space: U.S., Russian Spacefarers On The International Station
NPR's Kelly McEvers speaks with NASA Commander Scott Kelly and Russian cosmonaut Mikhail Kornienko, who are spending the year on the International Space Station.