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

The boundless potential of astronomical discovery contrasts sharply with the backwardness and reaction promoted by Trump and ...

"This measurement of the planet population from planets somewhat larger than Earth all the way to the size of Jupiter and ...

Once the quirky underdog of our solar system ... Now officially labeled a “dwarf planet,” Pluto may have lost its title, but not our affection. After all, who doesn’t love a comeback ...