If you are a budding astronomer or simply enjoy watching the sky through a telescope, you probably have an interest in all of the planets in our solar system. There are a total of eight planets, ...

Add Yahoo as a preferred source to see more of our stories on Google. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky ...

A tiny meteorite is rewriting what scientists thought they knew about the origins of our solar system. New evidence found in shavings from a meteorite known as Northwest Africa 12264 — a 50-gram (1.8 ...

The Solar System is a weird place filled with incredible physics and geological oddities that often break down in human terms. The way we learn the order of the planets is the classroom version of ...