"The Fermi Paradox" has several potential answers, some not very flattering.

Harvard astrophysicist Avi Loeb says advanced extraterrestrial civilizations, if they exist, might have little reason to care ...

Imagine a super-advanced alien civilization that needs insane amounts of energy way beyond our puny solar panels and wind turbines to power their mega-cities, AI overlords, or whatever interstellar ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an exoplanet in an alien star system. New research suggests that radio emissions from intelligent aliens may be ...

For decades, SETI researchers have focused on finding narrow-band radio signals that might stand out from the natural universe. But what if an advanced civilization that wanted to communicate would ...

If scientists sift through the Moon’s surface, we could find microscopic dust suggesting alien life, an Oxford astrophysicist suggested Breaking News Intern We may be able to find evidence of advanced ...

The Silurian Hypothesis asks whether signs of truly ancient past civilizations would even be recognisable today.