Triangulum Galaxy

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/triangulum-galaxy

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. What is the galaxy type?Sc spiral galaxy with a low-luminosity nucleus and prominent star-forming regions
2. What is the estimated stellar population?Approximately 40 billion stars
3. How far away is the Triangulum Galaxy?It is about 3 million light‑years away from Earth, which means the light we see left it 3 million years ago.
4. Why can we see the Triangulum Galaxy with our naked eye?Because it is very bright and close, its apparent brightness is 3.44, making it the farthest galaxy that can be seen without a telescope when the sky is dark.

Cepheid Variable Stars: Stars whose brightness pulsates at a regular rate, used to measure cosmic distances.
Metallicity: The abundance of elements heavier than hydrogen and helium in a celestial object.
Dark Matter: A hypothetical form of matter that does not interact with light but exerts gravitational force.