Sag DEG

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/sag-deg

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 object classification?Emission Nebula (H II region)
2. What is the constellation?Sagittarius
3. Why does Sag DEG glow?It glows because energetic photons from nearby hot O and B type stars ionize the hydrogen and helium in the gas, causing it to emit light.
4. How do new stars form in Sag DEG?Dense pockets of gas collapse under gravity, spin faster, form accretion disks, and build protostars that ignite nuclear fusion.

Emission Nebula: A cloud of interstellar gas that emits its own light due to ionization by nearby hot stars.
Stellar Nursery: A region within a nebula where conditions are favorable for the formation of new stars.
Nuclear Fusion: The process powering stars, where atomic nuclei combine under extreme pressure and temperature to release energy.
H II Region: A cloud of ionized hydrogen gas, typically associated with star-forming regions.