Somewhere out there, alien civilizations might be communicating with each other. They might even be trying to contact us. Fifty years ago, this reasoning compelled astronomer Frank Drake to point a radio telescope at the stars and listen for chatter. He didn’t hear E.T. calling us, calling home, or calling anywhere else during his four-month-long experiment at the National Radio Astronomy Observatory in Green Bank, W.Va., but the effort officially kicked off what is known as SETI, the search for extraterrestrial intelligence.
Do aliens exist? Explore the evidence — from the scientifically plausible to the incredible — suggesting that we may not be alone in the universe.
When E.T. phoned home, where did he call? If it was a local connection, Mars was the likeliest place. Learn about Mars and seven more relatively nearby targets where scientists believe they could find E.T.
Think life on Earth is weird? It might be even weirder on distant planets and moons, according to a new report.
Instead of thriving on water, extraterrestrial organisms might live in a sea of liquid methane. Or instead of getting energy from the sun, they might thrive on hydrochloric acid.
A Neptune-size planet likely covered in hot—but solid—water has been discovered in a snug orbit around a nearby star, a team of astronomers announced today.
While this planet is not fit for life, the finding suggests astronomers may soon detect habitable planets in similar alien solar systems, said Michaël Gillon of the University of Liège in Belgium.
Do extraterrestrials sweep their skies with radar to scan for incoming missiles?
If so, Avi Loeb of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, thinks he can find the radio signals leaked from warring alien civilizations.