For generations, the search for life beyond Earth has focused on avoiding one of science’s biggest mistakes: claiming a discovery that turns out not to be real. Researchers have built entire

"Disclosure Day" director Steven Spielberg opens up to USA TODAY about aliens, AI and why he'll never quit making movies.

Asked when they humans will likely have contact with extraterrestrials, an eye-popping 21% said, “We already have,” according to the poll.

The Pentagon on Friday released a third batch of vintage classified files related to “flying saucers” and other unidentified anomalous phenomena — better known to most Americans as unidentified flying objects,

With that, exobiologists avoided one of the things they fear the most: the false positive—seeing the existence of life where none exists. But what about the false negative—failing to see, or even rejecting plain evidence that indicates something living might be in the air,

There's no conclusive evidence of alien life or government cover-ups. But the files released Friday by the Pentagon reveal new details about some recent UFO sightings, along with the government's efforts to explain what many find inexplicable.

The object, called 3I/ATLAS, is only the third interstellar visitor ever detected passing through our Solar System.

Between the mid-1970s and early 1980s, two physicists, Michael Hart and Frank Tipler, published a controversial series of papers arguing that extraterrestrial intelligence didn't exist. As they argued,