<human>:  I recently heard that Pluto is no longer classified as a planet. What other changes and facts can you tell me about this?
<bot>: In 2006, the International Astronomical Union (IAU) officially reclassified Pluto as a "dwarf planet," which means it is not considered a true planet in our solar system any longer.2 The decision to reclassify Pluto was due in part to the orbit of the former planet taking it too far away from the sun at some points, as well as its size not being large enough to be considered a true planet. 3 Since its reclassification, the number of planets in our solar system is now eight – Mercury, Venus, Earth, Mars, Saturn, Jupiter, Uranus, and Neptune.4 Despite its reclassification, Pluto still remains an important figure in our solar system as a dwarf planet, and many scientists and astronomy enthusiasts continue to refer to it as a planet.5 There are now over a dozen known dwarf planets in our solar system, including Pluto, Haumea, Makemake, Eris, and more.