Researchers looking for signs of extraterrestrial life instead stumbled upon a pulsar at the center of the Milky Way galaxy.

The Deep Space Network (DSN) is just the sort of tool aliens could one-day detect, transmitting from Earth. Credit: NASA/JPL What if the first signal ever detected from an alien lifeform wasn't a ...

For more than 60 years, scientists have been scanning the skies for signs of intelligent life beyond Earth. Using powerful telescopes, they have searched for unusual radio signals, brief laser flashes ...

The odds are that life is out there – but rather than little green men, it may look more like hydrothermal vent tubeworms ...

We inhabit a small planet that rotates around one of 100 billion suns in the Milky Way galaxy. And the Milky Way is only one of 2 trillion other galaxies visible in the observable universe. That's ...