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Uranus & Neptune: Crash Course Astronomy #19

Today we’re rounding out our planetary tour with ice giants Uranus and Neptune. Both have small rocky cores, thick mantles of ammonia, water, and methane, and atmospheres that make them look greenish and blue. Uranus has a truly weird rotation and relatively dull weather, while Neptune has clouds and storms whipped by tremendous winds. Both have rings and moons, with Neptune’s Triton probably being a captured iceball that has active geology.

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Table of Contents
Ice Giants With Small Rocky Cores 2:18
Thick Mantles of Ammonia, Water, and Methane 1:53
Atmospheres Makes Them Look Green And Blue 2:53
Uranus Has Dull Weather 3:35
Neptune Has Active Weather 7:19
Both Have Rings And Moons 5:12

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PHOTOS/VIDEOS
Uranus [credit: NASA/JPL/Voyager mission]
Neptune [credit: NASA]
King George III
Uranus from Earth picture by Phil Plait
Uranus, Earth size comparison [credit: NASA]
Uranus core, reconstructed from [credit: Wikimedia Commons]
Uranus [credit: NASA, ESA, L. Sromovsky and P. Fry (University of Wisconsin), H. Hammel (Space Science Institute), and K. Rages (SETI Institute)]
Uranus storms [credit: Imke de Pater (UC–Berkeley)/Keck Observatory]
Uranus and rings (tilt demonstration) [credit: Hubble Space Telescope – NASA Marshall Space Flight Center]
Uranus with rings and moons [credit: ESO]
Miranda [credit: NASA]
Verona Rupes [credit: NASA]
Neptune’s Interior [credit: Lunar and Planetary Institute]
Neptune clouds [credit: NASA]
Neptune’s Great Dark Spot [credit: NASA / Jet Propulsion Lab]
Neptune’s Rings [credit: Rolf Wahl Olsen / NASA/JPL (Voyager 2, NASA Planetary Data System)]
Triton [credit: NASA / Jet Propulsion Lab / U.S. Geological Survey]
Triton flipped [credit: NASA/JPL]
Triton Nitrogen Geysers NASA]