(cokada/iStock/Getty Images) Alien megastructures built to harvest stellar energy or alter the orbits of stars may be ...

Humans have wondered for centuries whether we are alone in the universe — and a new study suggests that if alien ...

Add Yahoo as a preferred source to see more of our stories on Google. Is it the invasion of the genome snatchers? Just in case the idea of aliens walking around in human skin suits wasn’t frightening ...

Imagine you’re an alien astronomer, pointing your telescope toward our solar system, listening for signs of intelligent life. Would you hear us? For decades, scientists have wondered the same thing. A ...

Is it the invasion of the genome snatchers? Just in case the idea of aliens walking around in human skin suits wasn’t frightening enough. An outlandish study asserts that aliens might have abducted us ...

Add Yahoo as a preferred source to see more of our stories on Google. Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a sigh ...

Astronomers now understand that water-rich planets can form internally, even close to stars. A new study reveals that high-pressure reactions between hydrogen and molten rock within sub-Neptunes ...

Astronomers now understand that water-rich planets can form internally, even close to stars. A new study reveals that high-pressure reactions between hydrogen and molten rock within sub-Neptunes ...