A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

An image of a tentacled growth in space has caused an uproar online with freaked-out viewers imploring astronauts to “kill it with fire.” Viral photos showed the floating, purple egg-shaped object ...

Solar winds and coronal mass ejections may scatter narrow signals, making them harder for Earth-based telescopes to detect. The SETI Institute uses radio telescopes to search for signs of intelligent ...

US firm Vast is developing spinning space stations with artificial gravity to keep astronauts healthy on deep-space missions and push the search for alien life.