Earth Sciences 1086F/G Lecture Notes - Lecture 17: Tidal Locking, Distant Star, Tombaugh Regio
15 Apr 2016
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Pluto is a dwarf planet, reclassi ed as such bc more and more objects almost identical to pluto were being discovered. Other objects in that category are ceres, eris, makemake, and haumea. Trans-neptunian object: any sized objects in the solar system that orbit the sun at a greater distance- on average- then neptune, include everything in the kuiper belt and the oort cloud. New horizons spacecraft shot past pluto in july 2015. Launched 2006, took a 4 billion km journey to pluto. Percival lowell 1905: began to search for planet past neptune, which scientists thought perturbed the orbits of the gas giants, using same method as adams and leverrier used to predict the position of. Neptune, he worked from the observed irregularities in the motion of neptune: lowell predicted location of undiscovered planet which he predicted would be about. 7x bigger than earth, but never found it: died 1916.
