IC 1101

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/ic-1101

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 IC 1101?Discovered by William Herschel on June 19, 1790
2. What is the galaxy type and classification?Supergiant lenticular galaxy (S0 cD)
3. What is the cluster membership?Central galaxy of the Abell 2029 galaxy cluster
4. How big is IC 1101 compared to the Milky Way?IC 1101 is about 400,000 to 550,000 light‑years wide, which is four to five times larger than our Milky Way that is about 100,000 light‑years across.
5. Where is IC 1101 located in the universe?It is about 1.15 billion light‑years from Earth, so the light we see left the galaxy when Earth was very young.

Lenticular Galaxy (S0): A transitional galaxy type between spiral and elliptical, featuring a disk and bulge but lacking prominent spiral arms.
cD Galaxy: A type of giant elliptical or lenticular galaxy found at the center of rich galaxy clusters, often formed by mergers.
Isophotal Diameter: The diameter of a galaxy measured at a specific surface brightness level, used to define its apparent size.
Supermassive Black Hole (SMBH): A black hole with a mass ranging from millions to billions of solar masses, typically residing at the center of galaxies.