A novel method relying on biochemistry could provide an unambiguous signal of life on other worlds.
Aliens can refer to everything from little green men in the sci-fi realm to microscopic life forms beyond Earth. For all these possibilities, Live Science has you covered. We break down the latest discoveries that hint at life on other planets and the state of scientific searches for such extraterrestrial life. Sometimes, we may dissect a "little green man" sighting as well.
Presidential candidate Bernie Sanders (D-VT) says he's prepared to disclose government information about UFOs if he wins in 2020.
The search for intelligent aliens has time and again come up empty. Perhaps that means they aren't out there.
Are aliens using super powerful flashlights to get our attention? Astronomers think there's a chance they are.
What started as an internet joke has generated a stern military warning after more than a million people "signed up" to "raid" Area 51.
The moon may be dead, but the Apollo 11 astronauts still managed to bring extraterrestrial life back to Earth. Astronomer/alien hunter Seth Shostak explains.
More than 200,000 Facebook users say they're interested in joining a raid on Nevada's infamous Area 51 air base this summer.
Simple chemical reactions on hydrothermal vents could power life on dark worlds like Saturn’s world, Enceladus.
The UFO-investigating group MUFON turns 50 next month. What have we learned over the past five decades?
Certain conditions that nurture life deep underwater may also be found elsewhere in the solar system.
Black holes are engines of destruction on a cosmic scale, but they may also be the bringers of life.
Such a mission would have to keep two spacecraft, separated by thousands of miles, aligned within 3 feet of each other.
A new instrument designed to find potentially habitable alien worlds in the nearest star system to our own sun just revved up.
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