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

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

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

Having considered more than 1,000 cases, this analyst of unidentified anomalous phenomena has honed a rational process for ...

NASA has received one of the most unusual-looking pieces of hardware ever associated with the Artemis III program, and ...

In the 21st century, the theories regarding the existence of aliens refuse to dial down. Now, the recently resurfaced NASA photo of Martian planet has gone viral on various social media ...

Harvard astrophysicist Avi Loeb argues 3I/ATLAS and other interstellar objects may hint at alien technology, drawing fame, ...

The James Webb Space Telescope captured a stunning spiral galaxy 65 million light-years away, revealing glowing dust clouds and stellar nurseries.

An interstellar comet that blazed past the sun and swung by Earth last year could be nearly three times older than our solar system and is unlike anything ever before seen in our cosmic backyard, ...

An interstellar comet that blazed past the sun and swung by Earth last year could be nearly three times older than our solar system and is unlike anything ever before seen in our cosmic backyard, ...

Neil deGrasse Tyson calls on the government to just show the alien, saying Americans are ready for disclosure after years of hearings and UAP files.

The southern lights curve above the Earth as the ISS orbited above the Indian Ocean southwest of Perth, Australia. NASA / Jessica Meir A trail of glowing green lights dances in a wavy pattern as it ...