Any time NASA notices something unusual traveling across the galaxy, we collectively perk up and give it our full attention. Speculation is rampant that alien life is coming to visit us here on Earth ...

A comet known as 3I/ATLAS made news in July when it was confirmed to have originated outside Earth's solar system. One infamous theory even posited that the interstellar interloper, estimated to be ...

Halley’s Comet won’t be visible for another 36 years, but it is certainly making its presence known. October marks the return of the Orionid meteor shower, during which the Earth passes through the ...