Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

After they removed known sources such as stars from the photos, Phan and Goto noticed a dot with matching colors ... a “Planet X” existed in the far reaches of the solar system.

One set of dots had matching colors and brightness. open image in gallery Is there a possible ninth planet in our solar system? Researchers say they may have found a candidate (Credit: ESO/Tom ...