A Harvard astronomer is making waves by suggesting that a massive interstellar object hurtling through our solar system might be an alien spacecraft. Professor Avi Loeb, who also serves as director of ...

A newly detected super-Earth just 20 light-years away is giving scientists one of the most promising chances yet to search for life beyond our solar system. The discovery of the exoplanet orbiting in ...

A moon around Saturn could be even more hospitable to alien life than we thought, scientists have said. Heat is coming out of the top of the icy world, researchers have found in a major new study.

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