Alien, Event Horizon, and Pandorum are all among the absolute most terrifying sci-fi and horror movies set in space.

Interstellar comet 3I/ATLAS is now visible from Earth with small telescopes. Astronomers suggest spotting it in dark, clear skies near the Pegasus constellation during early morning hours this week.

November’s supermoon is the second of three supermoons this year and also the closest: The moon will come within just under 222,000 miles of Earth. Tides may be slightly higher during a supermoon ...