For centuries, and especially for the last century, we’ve been harboring a not-so-lowkey obsession with extraterrestrials. It’s in the news, from sightings to abduction reports, and it’s in our ...

Astronauts in orbit around the Earth often gaze down on a world lit at night by city lights. Now researchers suggest that scientists could detect alien civilizations from similarly bright lights.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Scientists have kept a close watch on the dazzling northern lights on Earth and other planets in ...