From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Elon Musk says most UFO sightings are not aliens but likely secret US military technology, echoing recent government reports that found no evidence of extraterrestrial craft.

Researchers have made bizarre claims, stating that they have found that aliens might have abducted humans and inserted genes into their DNA, which caused humanity to undergo genetic transformation, ...