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.
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.
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.'
Dozens of 'phantom' and 'cosmic' UFOs have been detected in the skies over Ukraine, a new government report claims.
We haven't found life on Mars yet, but one researcher believes we might be able to detect evidence of it on planets outside of the solar system within the next quarter of a century.
Starburst, the fruit-flavored soft taffy, is taking a nod from its name and preparing to become the first brand to send TikTok videos into outer space in "Ask the Universe" challenge.
Astronomer Frank Drake, who pioneered the modern search for intelligent life in the universe, passed away Friday (Sept. 2)at the age of 92.
Cosmic impacts can make planets and moons more porous than previously thought, potentially boosting their ability to host life, a new study finds.
The Allen Telescope Array in California detected signal from the Voyager 1 probe, a NASA satellite launched 45 year ago that is currently speeding toward the outer edges of the solar system.
The Galileo Project is the first systematic scientific research program in a search for artifacts or remnants of extraterrestrial technological civilizations.