The Compositional Layers of the Dwarf Planet Eris

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The compositional layers of the dwarf planet Eris were first discovered in 2006. Find out about the compositional layers of the dwarf planet Eris with help from an experienced education professional in this free video clip.

Part of the Video Series: About Astrophysics & Outer Space
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Hi, my name is Eylene Pirez, and I'm an astrophysicist and this is the composition layers of the dwarf Eris. So Eris was discovered in 2006 and this was actually what kicked Pluto out of the planet list and this is when they started discovering very, a lot of objects that were very similar to Pluto, we had to redefine what a planet was and Eris is another dwarf planet and categorized as a Kuiper belt object and it's very similar to Pluto in a lot of ways. So the anterior of Eris is very much like Pluto's, it's made out of rock and ice. Now the surface is mostly methane and ice and this has been studied by the way it reflects the light from the sun and it kind of gives the idea that it's methane and ice. A lot of things need to be studied about Eris since it's such a recent discovery and then the atmosphere is mostly methane and nitrogen. When it's further away from the sun it's mostly iced and when it gets closer to the sun it turns into vapor, so it's sort of seasonal. It just fluctuates between ice and vapor. And this is the composition layers of Eris. My name is Eylene Pirez and I'm an astrophysicist.

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