Astronomers are using China's powerful FAST radio telescope to chase after 100 intriguing signals detected by the SETI@home ...

Sources close to the Trump administration tell me the speech is complete and ready. This is not a drill...' 😨 ...

New photos show off NASA's newly constructed Roman Space Telescope, which will soon help researchers unravel the mysteries of ...

For generations, humanity has stared into the velvet abyss of the night sky, asking the same existential question: are we ...

An ailing astronaut is back on Earth. The crew of four returned Thursday, ending their space station mission more than a ...

For the 1st time in the history of the International Space Station, an astronaut experienced a health issue that required ...

NASA Administrator Jared Isaacman said all four Crew-11 astronauts are 'in good spirits' after they landed early Thursday ...

The members of Crew-11 — two American, one Russian and one Japanese — splashed down after one became ill, prompting an early ...

Two Americans and astronauts from Japan and Russia landed in a SpaceX capsule in the Pacific Ocean after a medical issue ...