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Interstellar, Alien, and Back to the Future are all among the all-time greatest sci-fi movies that deliver everything you ...

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There are plenty of great sci-fi movies to bring you the same sense of awe or ecological message as Avatar: Fire and Ash.

Harvard's Avi Loeb says a rare sun alignment on 22 January could prove interstellar visitor 3I/ATLAS is an alien spaceship.