A new search for alien signals focuses on planetary transits, when exoplanets pass right in front of their suns.
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.
The ODNI's report shows that the U.S. government appears to be taking UFOs and airspace safety issues seriously.
From investigating UFOs over Earth to using the most powerful telescope ever devised to peer into the atmosphere of alien worlds, 2022 has been a banner year in the search for extraterrestrial life.
Scientists have proposed another use for the world's largest gravitational wave observatory: scanning for the ripples in space-time left in the wake of gargantuan alien spaceships.
UFO reports from U.S. military personnel are flooding the government's new All-Domain Anomaly Resolution Office (AARO).
As part of the Breakthrough Listen project, the MeerKAT radio telescope will search a million nearby stars for signals from technology that could indicate intelligent extraterrestrial life.
UFOs are making headlines again, but lost in the hype and ruckus is the question of when this all started and how we got to this point.
In the depths of an Alpine mountain range, a researcher is searching for life that might look just like that on other planets.
Broccoli, algae and many other plants and microbes on Earth purge toxins by morphing them into gases that might be present in exoplanet atmospheres, signaling life.
The U.S. government has officially started to explain some of the most infamous UFO encounters of the last decade, with China and weather balloons as top offenders.
A recent report about pitch-black "phantom" UFOs in the skies over Ukraine has been discredited by Ukrainian scientists and by Harvard astrophysicist Avi Loeb.
In a new paper, scientists outline how we can look for clues any alien visitors to our solar system may have left behind.
Ancient microbes triggered a climate change on Mars that made the planet less habitable, which may have ultimately led to their extinction, a new climate modeling study suggests.
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.
The knowledge that we're not alone in the universe could have far-reaching effects on our view of ourselves and our place in the universe. But it's tough to get more specific than that.
In 1961, the US astrophysicist Frank Drake, who passed away on Sept. 2 at the age of 92, came up with an equation to estimate the number of intelligent civilizations in the Milky Way right now.
The U.S. Navy admitted that it has unreleased videos of UFO encounters but refused to share them due to 'national security concerns.'