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The universe's water is billions of years older than scientists thought — and may be nearly as old as the Big Bang itself
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Saucer-like 'Winnebago' space capsule lands in Australia — marking 1st for commercial space industry
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Space photo of the week: James Webb telescope shocks scientists with image of ancient galaxy roaring back to life
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'Extremely Large Telescope' being built in Chile could detect signs of alien life in a single night
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'Potentially hazardous' pyramid-size asteroid will make its closest flyby of Earth for more than 100 years this Wednesday
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NASA astronauts Suni Williams and Butch Wilmore spent 286 days stuck in space — is that a new record?
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Which states will see the March 29 solar eclipse — and which will see a 'double sunrise'?
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Intelligent aliens would need a power supply to jump-start their civilization — would they require fossil fuels?
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Stephen Hawking's black hole theory has big implications for the shape of the universe, new study claims
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Weird repeating explosion beyond the Milky Way is one of the hottest blasts scientists have ever seen
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'Extremely Large Telescope' being built in Chile could detect signs of alien life in a single night
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'Potentially hazardous' pyramid-size asteroid will make its closest flyby of Earth for more than 100 years this Wednesday
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Which states will see the March 29 solar eclipse — and which will see a 'double sunrise'?
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Stephen Hawking's black hole theory has big implications for the shape of the universe, new study claims
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Weird repeating explosion beyond the Milky Way is one of the hottest blasts scientists have ever seen
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Space photo of the week: The last sight you see before dying on the moon
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High-school student accidentally discovers black hole 'light echo' twice as wide as the Milky Way
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Scientists discover smallest galaxy ever seen: 'It's like having a perfectly functional human being that's the size of a grain of rice'
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Atacama Telescope reveals earliest-ever 'baby pictures' of the universe: 'We can see right back through cosmic history'
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Intelligent aliens would need a power supply to jump-start their civilization — would they require fossil fuels?
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QuizExtraterrestrials quiz: Are you an alien expert, or has your brain been abducted?
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If life can exist in your stomach, it can exist on Mars. Here's what it might look like.
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'Perhaps it's only a matter of time': Intelligent life may be much more likely than first thought, new model suggests
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The existence of intelligent aliens is 'highly likely' — and they could await in our own galaxy
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Did people report seeing UFOs before the 20th century?
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Alien life may look nothing like life on Earth — so how should we go about looking for it?
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12 strange reasons humans haven't found alien life yet
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'It's hard not to believe he saw something': Historian Greg Eghigian on how UFOs took over the world
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NASA astronauts Suni Williams and Butch Wilmore spent 286 days stuck in space — is that a new record?
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Futuristic, 'alien-like' nuclear fusion rockets developed in total secret could revolutionize space travel — if they actually work
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NASA reveals a sunset on the moon in high definition for the 1st time
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NASA astronauts Suni Williams and Butch Wilmore were carried away on stretchers after return from space. Here's why that's normal.
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'Welcome home!': NASA astronauts who spent 9 months in orbit finally back on Earth
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When will the 'stranded' NASA astronauts return to Earth?
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Finally! NASA and SpaceX launch Crew-10 mission to bring 'stranded' ISS astronauts back to Earth
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Liftoff! NASA launches SPHEREx telescope — an infrared observatory that will help JWST solve the mysteries of the universe
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Top-secret X-37B space plane returns to Earth in dead of night after mysterious 434-day mission, US military reveals
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