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.
Space
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.
Physics Nobel Awarded For Work On Neutrinos' Metamorphosis
Working far apart, both Takaaki Kajita and Arthur B. McDonald found that neutrinos shift identities like chameleons in space — and that they have mass.
Atlas Rocket Lifts Off In Florida, Delivering A Spectacular Sky Show
The exhaust plume left by the booster, which was carrying a Mexican satellite into orbit, left some strange and interesting patterns in the morning sky.
How 'The Martian' Became A Science Love Story
The movie about a stranded astronaut is being hailed for its scientific realism. Andy Weir, who wrote the book the film is based on, is a longtime computer programmer who sees romance in numbers.
Why NASA Didn't Just Send Over A Rover To Look For Water On Mars
One reason is that it would take the Curiosity rover about a year to get there, even with no obstacles and no traffic. But the other reason might surprise you.
Scientists Confirm There's Water In The Dark Streaks On Mars
The streaks on the Red Planet's surface appear to be caused by salty water, but how much water there is — and where it comes from — remains a mystery.
Super Blood Moon Eclipse Wows Viewers: Here's Proof
Did you see it? If not, don't worry: This much-anticipated event — in which a supermoon went into a full lunar eclipse — was well-documented.
Sunday's Lunar Eclipse Has Got It All
The total lunar eclipse, visible in the U.S. Sunday night, is the first since 1982 that's also a supermoon as well as a blood moon.