After months aboard the International Space Station, Scott Kelly and Mikhail Kornienko are coming home.
A distant galaxy curved the light of a cosmic explosion, making it appear in four separate images when it reached Earth.
… and soon they can look for signs of life on it.
Astronomers hope a final Cassini flyby will solve a mystery in one of Titan's lakes.
A new study scanned 5,600 stars for tiny emissions of light, which may be the best way for an extraterrestrial civilization to signal its existence.
Hydrogen in the jets suggests that Earth-like processes may be operating deep in Enceladus’s ice-capped ocean.
NASA’s Cassini probe will soon plunge into Saturn, ending its 13-year mission to the ringed planet and triggering a wave of grief among scientists, engineers, and an adoring public.
A steady drumbeat of remarks from Pentagon officials suggest they’re worried that warfare in orbit could soon become a reality.
It depends on what you’re sending there.
For the first time ever, Elon Musk’s company flew a segment of its Falcon 9 that was used in another launch last year.
Astronomers have glimpsed the telltale signs of newly formed stars inside the powerful winds of a supermassive black hole.
The new administration plans to bring back a committee that has tried over the years to guide policy—with mixed results.
Sometimes technology works, and sometimes it really, really doesn't.
Critics had plenty of reasons for wanting to disqualify women from spaceflight in its early stages—but none of them stuck.
Cassini has captured unprecedented views of the oddly shaped Pan during the spacecraft’s final weeks.
Three researchers describe their findings in NASA’s study of identical twin brothers, one in space and one on Earth.
To make a triumphant return to the moon with two dudes on board would be, well, less triumphant.
Hydrogen-spewing eruptions could help heat the atmospheres of planets that were once thought to be outside of the habitable zone.
The company plans to take two people—not astronauts, but private citizens—on a trip around the moon next year.
A pair of illustrators turned tiny blips in data into vivid views from the TRAPPIST-1 star system.
And all of them are in the temperate zone.