From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The third known visitor from another star system, Comet 3I/ATLAS, has been racing through the Solar System with just enough ...

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about "little green men" here, however — more "little (and not so little) gray rocks ...

Usually, these are regular people who happen to enjoy alien conspiracies, and they can largely be ignored. In the case of the ...

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

The unusual behaviour of interstellar comet 3I/ATLAS has reignited online debate, but astronomers say the gaps in public ...

There may be 19 asteroids in orbit around the sun that come from somewhere else entirely. If true, we could visit an alien 'world' without ever leaving the confines of the solar system. Share on ...

In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: ALMA (ESO/NAOJ/NRAO)/SMA/ L. Matrà et al. Rings of comets have been discovered around 74 ...

Our solar system might still bear the scars from an extremely close shave with an alien star. Such an encounter – the closest pass we know of – would have shaken up objects on the outskirts and might ...

The so-called 'planetesimal belts' are filled with tiny millimeter-sized particles created by collisions between comets. When you purchase through links on our site, we may earn an affiliate ...