Mundane wayward space snowball, or extraterrestrial visitor? Astronomers believe that our solar system's latest and only third ever confirmed interstellar visitor, 3I/ATLAS, is almost certainly a ...

Every few years, a new “mystery metal” surfaces and the internet races to declare it proof that we are not alone. Shiny shards, polished spheres, and desert monoliths are quickly framed as alien ...

First contact with alien civilizations won’t be with the beings themselves, but with their technology. By searching for these extraterrestrial artifacts, we embark on a journey through our solar ...