Could the first confirmed signal from an extraterrestrial source be less a hello than a goodbye? Astrophysicist David Kipping ...

To find advanced civilizations, you don’t need to go hunting for megastructures or hypothetical space probes. You could find civilizations just a few centuries ahead of us by looking for a key element ...

In 1995, a pair of scientists discovered a planet outside our solar system orbiting a solar-type star. Since that finding—which won the scientists a portion of the 2019 Nobel Prize in ...

A cosmologist suggests we should look for exploration, along with energy signatures, to try and find aliens. Dyson spheres of some kind may be built to harvest energy from dark matter in black holes.