Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Project Hail Mary, Solaris, and The Hitchhiker's Guide to the Galaxy are all among the very best sci-fi books set in space.

While 3I/ATLAS is definitely a comet, its composition and age have remained unclear. Now, astronomers have solved these ...

Before his death, Stephen Hawking consistently warned humanity against contacting aliens. As interest in UFOs and little ...

Last year, an interstellar traveler entered our solar system. Some speculated that it was an alien spacecraft, but it turned ...

The exoplanet telescope TESS revealed a distant world using an entirely different detection method than the one it was built ...

"When TESS launched, no one expected it to ever be capable of finding this kind of planet." When you purchase through links ...