Alien civilizations with technology levels similar to that of Earth could be visible with current instruments, if they've hoisted enough satellites into orbit, a new study suggests.
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.
Any alien civilizations born on "super-Earth" planets may be ground-bound by their home worlds' powerful gravity, a new study suggests.
Researchers use a cosmic gorilla to uncover the dangers of inattention in the search for alien life.
A viral story claims Buzz Aldrin passed a lie-detector test proving he saw a UFO in space. This is complete nonsense.
One of the biggest dips in the brightness of Tabby's star points to a possible source for its dusty light-blocker.
A popular YouTube channel is trying to convince viewers that photos of an avalanche on an island near Antarctica depict an alien spaceship crash site.
The flying saucer's copper bottom was covered in hieroglyphics, very much like the saucer discovered in Roswell, New Mexico.
These dusty comets, speeding through distance space, are the smallest objects ever detected in another star system.
Alien-life hunters shouldn't focus too narrowly on oxygen when scanning the atmospheres of exoplanets, a new study stresses.
E.T. has nothing to do with the bizarre dimming events of the mysterious object known as Tabby's star, a new study reports.
While most UFO sightings can be attributed to cloud formations, atmospheric phenomena, weather balloons or military planes, a few remain unexplained.