More mysteriously dimming stars have been spotted.
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.
Remember those viral UFO videos you saw last year? The government would like you to forget them, please.
Step right up and pick your doomsday — and then figure out what we could theoretically do, if we tried to avoid meeting that fate.
Earth's dazzling biodiversity may not be so remarkable in the cosmic scheme of things, a new study suggests.
Life has had plenty of opportunities to spread throughout the Milky Way galaxy over the eons — and our own Earth could be one of the key dispersal points.
Presidential candidate Bernie Sanders (D-VT) says he's prepared to disclose government information about UFOs if he wins in 2020.
Assuming that alien life will be similar to what evolved here on Earth could severely limit the potential for big discoveries, researchers said.
Are aliens using super powerful flashlights to get our attention? Astronomers think there's a chance they are.
Analysts at SatelliteInternet.com used data from the National UFO Reporting Center and the US Census to determine you might have a higher likelihood of spotting a UFO in the US.
'Oumuamua, the first known interstellar visitor, doesn't need an extraterrestrial solution to explain its oddities, according to a new study.
In July, the Mutual UFO Network (MUFON) celebrates 50 years of investigating and promoting research about unidentified flying objects. Do we know any more now than we did in 1969?
Phosphine, a horrible-smelling gas that's toxic to life on Earth, could signal the existence of alien life-forms elsewhere in the universe.
On Tuesday (June 18), the project announced that it's made the largest data release ever in the search for extraterrestrial life.
UFOs are very real, as we have recently seen — but that doesn't mean E.T. has been violating our airspace.
The former leader of the U.S. government's top-secret UFO program has stories to tell, and he is sharing some of them for the first time in a new documentary.
Those who don't learn the lessons of an extinct alien civilization's fall may be doomed to repeat it.
Here are the some of the best science fiction books Space.com's writers and editors have read and loved.
The U.S. Navy plans to set up an official reporting and investigative system that will monitor reports from its pilots about UFOs.
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