Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

Astronomers at NASA and the Gemini North Observatory have released new images of 3I/ATLAS, revealing a vivid green glow that ...

A study published in Nature Communications suggests that Europa’s rocky seafloor is likely too mechanically strong to support ...

NASA and SETI experts scan interstellar visitor 3I/ATLAS for alien 'technosignatures' as scientists say the 137,000mph object ...

Scientists from Washington University in St Louis in the US say they are still confident 'life is out there somewhere' ...

Astronomers scan interstellar comet 3I/ATLAS for alien signals as Breakthrough Listen's 2026 technosignature search comes up ...

People are getting used to strange visitors from deep space, so the latest one, 3I/ATLAS, was supposed to be a closed case.

Bad news for those hoping interstellar invader 3I/ATLAS is an alien spacecraft as technosignature search turns up empty.

Using the Hubble Space Telescope, astronomers have discovered a new type of cosmic object, a cloud of dark matter and gas ...