Life as we know it probably wouldn't exist.
The first color photo of Pluto, a warm-blooded fish, and much more
What we can learn from a massive meteor crater
We've rounded up 2014's most mind-blowing images for your viewing pleasure
It's a new policy for the International Astronomical Union.
Massive space rocks hurtle past Earth with frightening regularity. Some scientists want to deflect them. Others want to drag one closer.
Chatting about the universe with Neil deGrasse Tyson
Submit your three-line ode to the red planet by July 1!
A roundup of the data visualizations and illustrations that best conveyed the year in science
NASA already has an orbiter for 2013 and a lander for 2016; now it has another rover in the works, too.
An open letter from PopSci to President Obama about science and the future
Looking around for methane in Gale Crater, Curiosity found a whole lot of nothing. But that doesn't dash hopes of finding evidence of life on Mars some day.
Not where you'd think.
Intricate, untested sky crane airdrop is better than airbags, according to NASA
Call us, maybe
Tyson's book "Space Chronicles: Facing the Ultimate Frontier" is out today
What's the most habitable planet?
And whether they'll look like E.T.
A new ice age, exploding stars, the hypothetical Doomsday Machine, and more scenarios that are almost certain to eradicate life on Earth
Will Marc Norman's secret ice recipe set speed skating records in Salt Lake City?