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.