A young star called V1298 Tau is giving astronomers a front-row seat to the birth of the galaxy’s most common planets. Four massive but extremely low-density worlds orbiting the star appear to be ...

In a solar system far, far away NASA have discovered a planet which they think 'might be remarkably similar to Earth', though ...

This gas cloud located 500 light years away from our solar system is about to become a planet.This process usually takes a ...

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 ...

Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of stars are equally common. Physicists can now explain the dearth.

Researchers estimate that the planet has about a 50% chance of being in its star's Hoble zone.

New simulations suggest Jupiter holds far more water than once thought, reshaping ideas about how the largest planet formed.

The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

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 ...

Armstrong Williams takes on the news of the week and asks the questions you want answered. by The Associated Press and KOMO News Staff SEATTLE — While the winter and early parts of spring are not ...