Arche (moon)

High school (ages 12+)
Space & Astronomy

Name:

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/arche-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. How big is Arche (moon)?Gravitational capture of an asteroid or protoplanetary fragment
2. What is the object type?Irregular moon
3. What is the parent planet?Jupiter
4. What is Arche?Arche is a tiny moon of Jupiter, about 3 kilometers wide, with a shape that looks like a potato in space.
5. How fast does Arche orbit Jupiter?It takes only about 11 hours and 30 minutes for Arche to complete one orbit around Jupiter, which is very quick for a moon.

Irregular Satellite: A moon with a distant, often inclined, and sometimes retrograde orbit around its primary planet.
Hydrostatic Equilibrium: The balance between gravity pulling inward and internal pressure pushing outward, which shapes large celestial bodies into spheres.
Circumplanetary Disk: A disk of gas and dust orbiting a planet, from which regular moons are thought to form.
Orbital Perturbation: A deviation in an object's orbit caused by the gravitational influence of other celestial bodies.