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 ...

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

Though this hunt came up empty, the fact that 3I/ATLAS is only the third known object found in the solar system after ...

An international team of researchers pointed the largest single-dish radio telescope in the world at 3I/ATLAS.

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 ...

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 ...

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

Telescopes around the world are now tracking a new visitor to our celestial neighborhood. Streaking through at a speed and trajectory that not even the Sun's immense gravity can capture, we will only ...

I/ATLAS is a natural celestial object with all the qualities typical to a comet. It doesn't just belong to our solar system.