Most alien-signal searches listen to a narrow part of the radio spectrum, but astronomers are now testing higher frequencies that have barely been explored. A first search using archived ALMA ...

Between biosignatures and technosignatures lie noosignatures, and some scientists think they could help us find alien life ...

One of the challenges of searching for technosignatures (i.e., signs that intelligent life somewhere in the universe has ...

Searching for extraterrestrial intelligence has so far primarily meant focusing on one particular type of signal—and that ...

Researchers are zeroing in on more deliberate “narrow-band” alien signals, well outside the radio frequencies SETI has ...

Is artificial intelligence flight ready?

A 1989 investigation by George Knapp explored how various religious perspectives, including Catholicism, Judaism, Mormonism, ...

During the American Civil War soldiers often saw UFOs and strange beings, leading Ancient Astronaut Theorists to ask if extraterrestrials may have actually influenced the course of the war in this ...