Dysnomia (moon)

High school (ages 12+)
Space & Astronomy

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/dysnomia-moon

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. Who discovered Dysnomia (moon)?September 2005
2. How big is Dysnomia (moon)?Result of a large impact on Eris
3. What is the formal designation?(136199) Eris I
4. What is the estimated diameter?615+60−50 km
5. What is Dysnomia?Dysnomia is the only moon of the dwarf planet Eris, and it is the second‑largest moon of any dwarf planet in our solar system.
6. How was Dysnomia found?Scientists spotted Dysnomia in September 2005 using the Keck Observatory in Hawaii, which helped prove that Eris has a moon.

Albedo: The measure of how much light a surface reflects; a higher albedo means a brighter surface.
Tholins: Complex organic molecules formed by ultraviolet radiation acting on simple compounds like methane and nitrogen.
Scattered Disk: A region of the outer solar system containing icy bodies with orbits that are highly elliptical and inclined.
Space Weathering: The physical and chemical alteration of a celestial body's surface due to bombardment by solar wind, cosmic rays, and micrometeoroids.