If Project Hail Mary left you craving more space adventures, these 15 books deliver just that.

Until the U.S. government has data or samples of alien material that can be shared, the story of extraterrestrial visitors is ...

The Pentagon on Friday began releasing “never-before-seen” files relating to unidentified anomalous phenomena — previously ...

Most people carry a fairly comfortable picture of the planet they live on: solid ground underfoot, north is north, and ...