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

Stargazers can see six planets all in one evening during the second month of the year, especially Mercury, which is usually difficult to spot.

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 ...

A young star called V1298 Tau is giving astronomers a front-row seat to the birth of the galaxy’s most common planets. Four ...

When looking at our solar system, the planets going around the sun seem to be set up in a pretty organized fashion. They are all orbiting in the same direction, and exist on a roughly flat planetary ...

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 ...

When people speak of the northern lights, they are typically referring to Earth’s spectacular display of aurora borealis: ...

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

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 ...