Discovered in 1930, Pluto is the second closest dwarf planet to the Sun and was at one point classified as the ninth planet. Pluto is also the second most massive dwarf planet with Eris being the most massive. Pluto Dwarf Planet Profile Mass: 13,050,000,000,000 billion kg (0.00218 x Earth) Diameter: 2,368 km (+- 20km) Known […]
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