If ancient extraterrestrial explorers ever traipsed through Earth's cosmic neighborhood, it's possible they left behind some interstellar litter in their wake. Think of it like the loose hubcaps on ...

An interstellar visitor is facing its trial by fire today, and one of the world's most prominent astronomers is watching for the verdict. Some believe the object, 3I/ATLAS, may be about to unveil ...

The group leading the charge in the search for extraterrestrial life has given the all clear: An interstellar comet looks to be completely natural and free of any alien tech. The SETI Institute said ...