A free-floating planet has been seen devouring astonishing amounts of matter, hinting that stars and planets are more alike ...

A 2017 satellite photo shows the stark contrast along the boundary between a giant field of golden "star dunes" and a barren ...

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

Today, astronomers have at least a dozen techniques to seek and detect planets orbiting other stars, and have turned up thousands. But 51 Peg will always be special since it was our first. Not only ...

The rogue planet, known as Cha 1107-7626, is about 620 light-years away in the constellation Chamaeleon. It weighs in at five ...

They flash across the night sky in seconds, sparking wishes and wonder. But these mysterious streaks hold far more secrets ...

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

Astronomers have captured the clearest picture yet of how massive stars are born, revealing a dramatic interplay between ...

Did you see the bright star next to the moon? That was Venus, and part of a conjunction between the moon, Venus and the star Regulus. Will it return?

A celestial event called a conjunction featured the moon, Venus, and the star Regulus on Sept. 19. The trio will still be shining on Sept. 20, but Venus and Regulus will be further from the moon. The ...

Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than ...