Zoe Macintosh

Scientists may have an extra challenge when it comes to detecting alien civilizations, but not for the reasons you might think.

New photos from a powerful NASA spacecraft around Mars have revealed a young crater on Mars with a floor covered in water ice.

Giant rings of ultraviolet light have been spotted around some ancient galaxies, the likes of which have never been seen before.

NASA is serious about its latest contest: Design a solar-powered night rover for exploring other worlds.

A majestic spiral galaxy swirling with dark tendrils of gas stands out in a new photo of one of the most densely packed regions of the universe.

The violet sparkles of baby stars lighten the dark field of the Tarantula Nebula, a yellow-tinged cloud of gas in a nearby galaxy, in a new photo released this week.

A frenzy of star birth has been captured in a new photo of a distant — but extremely bright — galaxy.

A new European weather satellite passed a vacuum test to prove it is fit for the rigors of space, officials announced.

A suborbital NASA rocket lit up the predawn sky above Virginia early Wednesday during a demonstration flight to test its new motor.

The first humanoid robot headed for space is taking Twitter by storm by posting updates on its coming spaceflight and will meet the press Wednesday.

Instruments supporting a joint mission Mars in 2016 have been selected by NASA and the European Space Agency.

NASA did not violate federal law or congressional guidance by taking actions that would prematurely kill the Constellation program, a new report says.

After over 20 years of neglect, the planet Venus is once more drawing NASA's eye for ambitious new missions.

Gusty winds that blow in reverse of prevailing weather on Saturn's largest moon Titan appear to shape some of the moon's odd equatorial sand dunes, a new study finds.

NASA is putting the mirrors for its ambitious new James Webb Space Telescope through the ultimate cold test.

The UK Space Agency has announced it will develop and launch a miniature cube-shaped satellite to be used for inexpensive science missions in low-Earth orbit.

American Sign Language made its debut on the International Space Station in an address by NASA astronaut Tracy Caldwell Dyson.

New studies of sediment layers show that widespread fire from a meteor explosion was not the trigger for abrupt climate change 12,900 years ago.

NASA has selected nine experiments designed by schoolchildren for astronauts to conduct on the International Space Station this summer.

The University of Chicago has pledged $50 million to the construction of the Giant Magellan Telescope (GMT) in Chile, which will be the one of the world's largest telescopes.

The Herschel space telescope has captured an image of a stellar nursery so shrouded by dust that no infrared telescope has been able to see it until now.

NASA's Kennedy Space Center is serving as a sanctuary for endangered wildlife from the Deepwater Horizon oil spill.

Photographs of enormous pits on the moon, some hundreds of feet deep, taken by unmanned probes have given scientists a tantalizing glimpse into the lunar interior.

Dealing with space debris presents a thorny political issue that must be addressed, according to an international foundation's brief to the United Nations.