The sun is the brightest object in our skies — but it wouldn't be if we could see incredibly energetic gamma-rays as well as visible light.
NASA has ordered a review of the nonprofit organization that oversees the U.S. laboratory on the International Space Station to evaluate its commercial strengths and weaknesses.
China's Chang'e-4 mission has completed eight full days of science work on the far side of the moon — and in between the experiments, the lander and rover have sent home some new photographs, too.
Astronomers have been watching the black hole at the center of our galaxy for 20 years, and in May, they saw something they'd never seen before.
India's Chandrayaan-2 mission has marked another milestone in its journey to the moon, leaving Earth's orbit and heading toward lunar orbit with an engine burn.
It's stressful to hang out near the king of the solar system, and Jupiter's moon Io bears the scars of that close relationship on its surface, which is pockmarked by a host of volcanoes.
When NASA makes its move to grab a piece of space rock, will its spacecraft snatch at a sample of a dark, sandy Nightingale or of a very wet Kingfisher?
A team of four NASA spacecraft finally caught sight of a phenomenon scientists have been hunting for years: an interplanetary shock.
Today, Wernher von Braun is remembered as a rocket engineer who spent his career singlemindedly focused on enabling human spaceflight, first for Nazi Germany and then for the U.S.
Miguel Román is the sort of person whose family barbecues are interrupted by calls from Army personnel asking where they should bring generators when a hurricane strikes.
NASA's Parker Solar Probe has already completed two daring dives into the sun's atmosphere, and now scientists have realized that they'll be able to gather more data than expected from the mission.
It's the ultimate magic of science, when using a different instrument reveals what was hidden in plain sight.
Would-be moon explorers are eager to learn better tactics for tracking down ice, which they hope to turn into water and rocket fuel — and new research may have found a new key to spotting buried ice.
It's been seven years since NASA's Curiosity rover touched down on Mars, but the robot geologist is still tackling big questions about Red Planet rocks.
The American Museum of Natural History has just finished sprucing up its Halll of Meteorites to highlight a new era of sample-return missions and a new museum acquisition, a lunar meteorite.
A new space station experiment is testing whether would-be space miners can enlist some very small potential accomplices to do their grunt work.
The Milky Way was born in violence, and scientists are still piecing together a picture of the crime scene.
Astronomers think they've spotted a planet with three suns on its horizon — but that still isn't the most interesting thing about the world's skies.
NASA's TESS mission was designed to hunt alien planets, but it's done more than that in its first year at work, as a new NASA video highlights.
It's too weird to make up: NASA fed some of its precious Apollo 11 lunar samples to cockroaches. And dumped it in fishbowls. And injected mice with it. No, really.
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