If intelligent alien civilizations do exist, scientists think they could be using powerful flashlights to communicate with us. Astronomers have started to explore the idea that aliens could be trying ...

In the last decade, the Keck Observatory in Hawaii, one of the world’s most powerful telescopes, has spent hours staring at the night sky in search of exoplanets and accumulating huge amounts of data ...

Explore how physicists are using light beams in the search for extraterrestrial life within the Andromeda Galaxy's trillion stars. Physicists at the University of California, Santa Barbara are taking ...

An ambitious, student-run hunt for intelligent aliens is underway. The Trillion Planet Survey has begun scanning the huge Andromeda galaxy, as well as our own Milky Way, for beams of light that could ...

A pair of MIT researchers has proposed a radical method for making our presence known in the universe. In a new feasibility study, the team says it could be possible to use laser technology as a ...

An amateur astronomer was gazing at the stars through her telescope when she noticed something bizarre. Just past her sighting of the moon, Paula Gilley could see Saturn. Article continues below ...

Add Yahoo as a preferred source to see more of our stories on Google. In a discovery that challenges conventional optics, scientists have managed to make a laser beam cast its own shadow—a feat ...

Coventry's skyline was illuminated on the weekend as a massive laser beam was fired into the air from the city centre. But, while some feared an alien invasion and others were certain the light was to ...

It's a fair bet that aliens are more like The Klingons than The Clangers. Which means that if an aggressive extraterrestrial species manages to spot Planet Earth, they're probably going to come and ...

The new telescope, which has a 1.8m (72-inch) primary mirror, is the first dedicated optical Seti (Search for Extraterrestrial Intelligence) telescope in the world. It has been installed at the ...

Conspiracy theorists have been left fearing an alien invasion or even the apocalypse after a spectacular image captured beams of light shooting into the night sky. The intriguing picture shows blue ...

Black holes are spacetime regions exhibiting such powerful gravitational effects that nothing – even light — can escape. Our understanding about black holes is beginning to grow, following the Laser ...