These icy bodies orbit the sun just like the major planets, yet they follow their own rules, often traveling along elongated ...

"We've often seen the 'baby pictures' of planets forming, but until now, the 'teenage years' have been a missing link." ...

Skygazers, mark your calendars because one of the coolest celestial events is coming around again toward the end of February.

Scientists have discovered more than 6,000 planets beyond our solar system. What if some of them aren't planets at all, but ...

At the heart of our own galaxy, there is a dense thicket of stars with a supermassive black hole at the very center. NASA's ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in ...

The milestone highlights the accelerating rate of discoveries, just over three decades since the first exoplanets were found. The official number of exoplanets — planets outside our solar system — ...

New research suggests that essential components of life may assemble in interstellar space long before planets or oceans ...

Add Yahoo as a preferred source to see more of our stories on Google. Digital art of distant planet - Dottedhippo/Getty Images On August 24, 2006, our solar system lost a planet. It wasn't by ...

Astronomers have discovered seeds of rocky planets forming in the gas around the baby sunlike star providing *** peek into the start of our own solar system. The the thing that we've discovered is ...