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

A viral theory claims more than 50 alien ships are heading towards Earth led by interstellar object 3I/ATLAS. What is the ...

Looking ahead, the comet will pass roughly 33 million miles from Jupiter in March 2026. Loeb noted the scientific value: monitoring 3I/ATLAS with the Juno spacecraft could reveal unusual activity, ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Astronomers thought they had seen the "first hints of life on an alien world" this year, but they disappeared under closer ...

Could the first confirmed signal from an extraterrestrial source be less a hello than a goodbye? Astrophysicist David Kipping ...

There's the invasion by a warlike species, there's the highly evolved species trying to communicate with our primitive ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

Could the galaxy’s third confirmed interstellar visitor be an alien probe? The now christened comet 3I/ATLAS is sweeping past ...

The first signals from extraterrestrial civilisations, according to David Kipping's Eschatian Hypothesis, are likely to be ...

Scientists searched 27 exoplanets for alien technology using planetary eclipses, revealing a new way SETI hunts signals ...