A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...

"We were safer in space." It's time! The first two episodes of this highly anticipated sci-fi series premiere today. To celebrate the launch (and landing) FX has debuted one last 60-second promo ...

An astrophotograph of the interstellar comet known as 3I/ATLAS highlights its green coma and a wandering blue-tinted ion tail. (Copyright Victor Sabet and Julien De ...

The eyes of every astronomer widened this year when an interstellar traveler was discovered in our solar system. Despite some suggestions that it could be an alien spacecraft, observations from some ...

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