Are we alone? It's one of the most basic questions of human existence. People have been trying to answer it for millennia in ...

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

Listen to more stories on the Noa app. To study the origins of our universe is to struggle with profound chicken-or-egg questions. We know the Big Bang happened. Cosmologists can see its afterglow in ...

Small and unassuming, Segue 1 is a nearby dwarf galaxy containing only a handful of stars—too few to provide the gravity ...

Scientists figured out that the universe is billions of years old — after years of reading ancient rocks and dying stars, and ...

"It's an elegant answer, really, because we thought it was a tiny galaxy full of many separate cold stars, but it's actually, effectively, one gigantic, very cold star." New research suggests that ...

Astronomers have a new theory about planetary formation, and it revolves around one mysterious concept: interstellar visitors. No, not little green men, but rather deep-space wanderers like the ...

Stars are the original nuclear fusion reactors. As it evolves, a star continuously fuses hydrogen, helium, and—if it becomes big enough—heavier elements, releasing the energy created into space as ...

The universe exists because matter and antimatter are not good friends. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Is there a scientific ...