The four should arrive at the orbiting lab on Saturday, filling the vacancies left by their evacuated colleagues last month.

Comets usually fade quietly once they swing past the Sun. Interstellar comet 3I/ATLAS did not follow the same path. Instead, ...

You don't need a rocket ship to visit another world. Right here on planet Earth, there are bizarre landscapes that defy ...

The unexpected closure of airspace above El Paso, Texas, this week abruptly ended on Wednesday, following a mysterious notice ...

A new paper suggests that BARSOOM may have been alive on the planet, and was killed in the Viking experiments.

The interstellar visitor, only the third such object to be discovered passing through our solar system, ignited controversial ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

Harvard scientist Avi Loeb suggests comet 3I/ATLAS may be an alien vessel seeding life, after NASA's SPHEREx spacecraft detected unexplained methane and organic chemicals on board.

If we were to ever find alien life, breaking the news to the general public could be much more difficult than one might think ...

Scientists have finally discovered how amino acids essential for life formed on the 4.6-billion-year-old asteroid Bennu.

This twist — that 3I/ATLAS' outer layers have been baked by the sun — does not derail our mission. It just makes the science ...

SIGNS of an alien planet that’s about the same size as Earth have been picked by up a Nasa telescope. Scientists say it might ...