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.
Latest about Extraterrestrial Life
The fastest-moving stars in the galaxy may be piloted by intelligent aliens, new paper suggests
To explore the galaxy and hunt for resources, intelligent aliens might need to turn their home stars into natural spaceships, a new paper suggests. A few known star systems might fit the bill.
UFO whistleblowers tell Congress 'we are not alone in the cosmos'
The latest congressional UFO hearing featured testimony from former military personnel who told representatives that excessive government secrecy hides the fact that we are not alone in the cosmos.
It would be easier to find aliens in a parallel universe than in our own, new multiverse study claims
A new model based on the famous alien-hunting Drake equation suggests that some parallel universes within the hypothetical "multiverse" could have higher chances of containing extraterrestrial life than our universe.
Does alien life need a planet to survive? Scientists propose intriguing possibility
While such organisms may or may not exist in the universe, the research has important implications for future human endeavors in space.
Father-daughter team decodes 'alien signal' from Mars that stumped the world for a year
A father and daughter team based in the U.S. have decoded a mock "alien signal" beamed from ESA's ExoMars Trace Gas Orbiter a year ago — but the meaning of the extraterrestrial message remains a mystery.
Alien civilizations are probably killing themselves from climate change, bleak study suggests
Astrophysicists estimate that any exponentially growing technological civilization has only 1,000 years until its planet will be too hot to support life.
'Space trash' will lead us to intelligent aliens, Harvard astrophysicist Avi Loeb says
The long-sought evidence of alien life could be lurking in Earth's oceans, says Harvard astrophysicist Avi Loeb. Here is his plan to find it.
Infamous 'Wow! signal' that hinted at aliens may actually be an exceptionally rare cosmic event
The source of a supposed alien broadcast that made researchers go "Wow!" may instead have been the result of a remarkably rare cosmic event, a new study suggests.
