How much would a report like this really tell us?
UFOs, or Unidentified Flying Objects, and extraterrestrials are perennial favorites in science fiction, but to date there have been no confirmed encounters on Earth. Still, strange sights in the night sky have been attributed to UFOs or aliens over the decades, most famously in Roswell, New Mexico, where many believers claim an alien craft crashed on a farm in 1947. In 2017, the existence of a secret U.S. government program that tracked "UFO" sightings by military pilots, which shut down in 2012, was brought to light in a New York Times report.
Far-off alien planets covered in vast oceans might be common in our Milky Way galaxy, scientists find.
Researchers using China's huge new FAST radio telescope are piecing together a technological strategy to carry out a major and sweeping search for extraterrestrial intelligence (SETI).
UFO sightings during NATO war games in 1952 set the stage for the season finale of "Project Blue Book," the History channel's series about the U.S.' real-life UFO-hunting program.
Freeman Dyson may be gone, but his famous alien-hunting idea will likely persist far into the future.
Space.com sat down with Sarah Scoles, author of "They Are Already Here: UFO Culture and Why We See Saucers."
Read an excerpt from the new book "They Are Already Here: UFO Culture and Why We See Saucers" by Sarah Scoles.
A new research paper has found a new potential type of abode for life: a rocky planet orbiting just past the event horizon of a rapidly spinning supermassive black hole.
A research team claimed to have found the first known extraterrestrial protein, spotting it in a space rock that fell to Earth 30 years ago.
As the hunt for life on Mars starts getting into full swing, some scientists are already looking beyond the Red Planet, to our solar system's next astrobiological frontier.
The Breakthrough Listen SETI project has scanned the interstellar Comet Borisov for "technosignatures" but come up empty so far.
The U.K.'s Ministry of Defense announced that it will soon release formerly classified government files about UFO encounters.
"Project Blue Book," the hit television docudrama about the U.S. military's investigations into aliens more than 50 years ago, is back for Season 2.
Anthropologist reveals a potentially big flaw in the Search for Extraterrestrial Intelligence (SETI).
Alien life is out there, but our current theories seem to be steering us away from it, says this scientist.
The great distances covered by visiting "aliens" may be ones of time rather than space, a recent book argues.