While aliens in science fiction hop between planets on vast spaceships, scientists say real-life extraterrestrials might take ...
Interstellar comet 3I/ATLAS has steadily been making its exit ever since it had a rendezvous at the end of October with the sun.
The interstellar comet 3I/ATLAS is leaving our solar system for good. Here's what to know about its journey and NASA's observations.
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