A molecule detected on a planet 124 light-years away is produced on Earth by decaying phytoplankton and other microbes. There is no other known source.

British startup Pulsar Fusion has unveiled Sunbird, a space rocket concept designed to meet spacecraft in orbit, attach to them, and carry them to their destination at breakneck speed using nuclear ...

On Thursday, April 24, 2025, the Hubble Space Telescope will celebrate 35 years in space. Can it still hold its own and prove ...

They would work on minute quantities of fuel and produce no dangerous waste. However, fusion requires a lot of energy to start ... to four years (NASA’s Europa Clipper, launched in 2024 towards ...

The astronomers stopped short of claiming definitive evidence of biological activity but they said the new findings were compelling, as no known ... and Nasa’s Europa Clipper, are en route ...

“There is no shallow ocean,” said Bolton ... including Io’s neighbor, the icy moon Europa, where the heat is thought to sustain a subterranean saltwater ocean. NASA launched the $5 billion Clipper ...