Polling shows that nearly half of Americans now believe aliens have visited this planet—and that the number who aren't sure ...

Within the lifetimes of today’s teenagers, some of the world’s most respected researchers now say the discovery of alien life ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” ...

Aliens might be transmitting communications signals to each other across exoplanets, some astronomers think. Since these signals are likely sent as narrowband radio waves, we may now have a way to ...

Astronomers thought they had seen the "first hints of life on an alien world" this year, but they disappeared under closer ...

Elon Musk doesn't believe aliens have visited planet Earth and thinks UFOs have more to do with the United States government ...

He cited the astronomical gaffe in January, when The Minor Planet Center in Cambridge, Mass., announced the discovery of an ...