A search for the truth behind UFO sightings leads to the discovery of government cover-ups.
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.
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.
The US Navy confirmed they have secret, classified documents regarding a 2004 UFO encounter, but releasing them could 'gravely damage' national security.
If there are creatures swimming in the buried oceans of the outer solar system, they're probably not related to us, new research suggests.
A private UFO enthusiast has donated his collection of 30,000 documents to the University of Manitoba in Canada. The truth is in there.
Spotting signs of long-dead life is a tall order for a lonely robot on a faraway world, but NASA's next Mars rover should be up to the challenge, mission team members said.
China's giant, alien-hunting radio telescope is finishing its testing-and-commissioning phase, which has occurred over the past three years.
Is 2020 the celestial payoff year, in which astronomers finally confirm a "technosignature" coming from an advanced alien civilization?
Space.com's editors present a reading list for space and sci-fi lovers, as well as children who are interested in astronomy and spaceflight.
If there's life on Jupiter's ocean moon Europa, an upcoming NASA mission might be able to sniff it out.
At a recent event in Boca Chica, Texas, SpaceX CEO Elon Musk confirms that, to his knowledge, we haven't yet discovered aliens.
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.
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