I N BRIEF In 2006, the planet known as Pluto was reclassified as a dwarf world. Over a decade later, this error is finally being corrected by astronomers. Welcome to a solar system that, once again, has nine planets. Today is a historic day—one that will bring joy to the hundreds of millions of Pluto lovers around the globe. The International Astronomical Union (IAU), the body that is responsible for naming and classifying objects in the cosmos, has just announced that Pluto has been reclassified as a major planet. Image credit: Quark Tees That’s right, the little dwarf will be rejoining the ranks of Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Planet-X (the planet that will surely spell doom for all humanity). As many of you know, in 2006, the IAU made their infamous vote, deciding to demote everyone’s favorite planet to a “dwarf planet.” Their reasoning was that too many people would confuse Pluto (the doggy of Disney fame) with...
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