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

The interstellar visitor Comet 3I/ATLAS passed Earth with Harvard astrophysicist Avi Loeb saying it could be an alien probe.

I/ATLAS may have moved away from Earth as it makes its way out of the solar system, but this interstellar intruder continues ...

One estimate by an engineer in SCU forecasts that given 300 "actual" UAP sightings per year — and assuming random distribution of sightings — that with 930 automated camera systems distributed across ...