An unusual visitor has entered our cosmic neighborhood. Scientists call these objects interstellar objects, or ISOs. Unlike ...

Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

Can Higher-Dimensional Aliens Exist? Considering the Contradictions of an "Invisible World" Through the Lens of Physical ...

From the Star Wars spin-off The Mandalorian to the classic series Star Trek: The Next Generation, these are the best sci-fi shows that feature aliens.

Astronomers using the James Webb Space Telescope have discovered that a distant alien planet's atmosphere is surprisingly lopsided. Located 1,300 light-years away, the scorching gas giant WASP-17b ...