Reference Explore the eight (or nine) planets of the solar system in order from nearest to the sun and discover the many wonders of our solar system along the way. An object seen to have moved in the ...

Researchers have found a candidate for the hypothetical Planet Nine, which could be an undiscovered giant planet way out in our solar system. However, as with all ninth planet research, the new ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Astronomers have detected a promising sign of a ninth planet lurking at the the farthest reaches of the Solar System.

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

Brown dwarfs are sometimes called failed stars because they're lighter than stars, but heavier than gas giant planets. A light-year is nearly 6 trillion miles.The brown dwarf pair was first ...

A new "Tatooine-like" planet outside the solar system may orbit two failed stars ... A light-year is nearly 6 trillion miles.The brown dwarf pair was first spotted years ago.