Omega Centauri

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/omega-centauri

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 heavy is Omega Centauri?4 million solar masses
2. How big is Omega Centauri?Core remnant of a disrupted dwarf galaxy
3. What is the designation?Omega Centauri (ω Cen), NGC 5139, Caldwell 80
4. What is the location?Constellation Centaurus
5. How far away is Omega Centauri?It is about 17,090 light‑years from Earth, far beyond our solar system.
6. How many stars are inside Omega Centauri?Roughly 10 million stars live inside a space about 150 light‑years across, making it an immense stellar city.

Globular Cluster: A densely packed, spherical collection of hundreds of thousands to millions of old stars orbiting a galactic core.
Dwarf Galaxy: A small galaxy containing significantly fewer stars and mass than a large galaxy like the Milky Way.
Galactic Cannibalism: The process by which larger galaxies gravitationally accrete and absorb smaller galaxies.
Stellar Population: A group of stars within a galaxy that share common characteristics, such as age, chemical composition, and spatial distribution.