How far away aliens might detect life on Earth.

Unlike our Moon, they can keep water in oceans liquid for more than 4 billion years.

For four decades, many SETI experiments have focused on finding sharp spikes in frequency but the new study says signals may not stay narrow as they travel away from their home system.

Publisher Team17 and developer Observer Interactive have released a new narrative trailer for ecosystem-driven “Petroidvania” game Rover’s Tale, formerly known as Good Boy.

Over six decades of “Doctor Who,” the intergalactic adventurer’s adversaries have included evil robots, rampaging Yeti — and the BBC, which erased many early episodes of the now-iconic sci-fi TV ...

Upon assuming the role of the new Scarlet Speedster, Wally immediately began pushing the limits of what could be done with super speed.

Astronomers say a distant, sunlike star shows signs of a catastrophic planet-on-planet crash that may mirror the ancient impact that formed Earth's moon.

Astronomers have witnessed evidence of an extremely violent collision between planets, and it resembles the event in Earth's history that created the moon.

The most important words in the latest trailer for Steven Spielberg‘s Disclosure Day are not words at all. They are a series ...

SETI researchers may have missed alien signals due to a cosmic phenomenon that distorts narrowband radio waves, new research says.