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

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 ...

Interstellar visitor 3I/ATLAS sparked alien probe theories, fueled by Harvard scientist Avi Loeb's suggestions. However, ...

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 ...

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 ...

Recent research suggests that our solar system could already be hosting alien probes, potentially observing us from a distance. This idea aligns with a 2023 statement from a Pentagon UFO chief who ...

Object 3I/ATLAS is now too far from Earth to aim a telescope at, but prior observations showed some unusual behavior. The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought ...

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

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 ...

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 ...

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 ...

The James Webb Space Telescope has captured a belching protostar in its infancy. By studying the dust grains whirling around it, astronomers hope to better understand how solar systems like our own ...