Former NASA astronaut Leroy Chiao reported metallic orbs about three feet wide, passed within 20 feet of his plane without warning from air traffic control. Former NASA astronaut Leroy Chiao has ...

神舟十九号乘组航天员蔡旭哲、宋令东已完成一项超过9小时的出舱活动，创下世界纪录。图为蔡旭哲先前在太空站实验室舱问 ...

NASA astronauts Sunita Williams, Barry Wilmore and others at the International Space Station. (Reuters) Indian-origin American astronaut Sunita Williams and Barry ‘Butch’ Wilmore have been stranded at ...

Indian space agency ISRO is creating "Habitat-1 or Hab-1" which is its first-ever "analogue mission" in which space conditions are simulated to prepare astronauts before they go for real space ...

Correction: During this segment, we misnamed the National Business Aviation Association. The transcript has been updated. We regret the error. A pair of NASA ...

Two NASA astronauts who flew up to the International Space Station in a Boeing Starliner capsule for a round trip that was supposed to last just over a week will be stuck in space for closer to a ...

An icon in the shape of a lightning bolt. Impact Link Two astronauts have been stuck on the International Space Station for months because of issues with Boeing's new Starliner spaceship.

The astronauts stayed behind because the capsule, plagued with thruster failures and helium leaks, was too risky for them to ride back in as ITV News' Cari Davies reports NASA's stranded ...

Astronauts Suni Williams and Butch Wilmore, who arrived at the International Space Station in June, won't return home in February, as previously announced Anna Lazarus Caplan is a writer-reporter ...

Two Chinese astronauts aboard the Tiangong space station have broken the world record for the longest single spacewalk, set more than two decades ago by the US space programme. The previous record ...

Two NASA astronauts who have been stuck in space since June have had their return flight pushed back again, after what was supposed to be an eight-day trip. The agency said it expected Sunita ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. NASA has announced ...