From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to come thick and fast. But when we've found it, how will we know for sure?

On the frozen surface of Jupiter’s moon Europa, a strange, star-shaped scar has become an unlikely focal point in the search ...

All eyes were glued to the interstellar comet on the 19th of December, as 3I/ATLAS made its closest flyby to Earth at 1.79 AU ...

We’re excited that this opportunity to view another target on the way to Jupiter was completely unexpected,” said Dr. Kurt Retherford, principal investigator for the Europa Ultraviolet Spectrograph ...