The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another ...

Instead, scientists are looking into existing spacecraft already in orbit around other planets. Harvard Professor Avi Loeb ...

Avi Loeb suggested that NASA may have rushed to conclusions by ruling out the possibility of an artificial aircraft.

While NASA initially identified the object, named 3I/ATLAS, as a comet after spotting what appeared to be a tail, Harvard ...