Pea 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/pea-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. How big is the Pea galaxy?Galaxy formation and evolution, reionization epoch, stellar feedback, interstellar medium physics
2. What is the morphological classification?Compact, high-ionization emission-line galaxies, often exhibiting starburst characteristics
3. What is the physical scale?Estimated radii typically in the range of 1-5 kiloparsecs (approximately 3,000-16,000 light-years)
4. What are pea galaxies?Pea galaxies are tiny, bright galaxies that look like peas. They are very small but make a lot of stars in a short time.
5. Why are they called "peas"?They were named for their look in early pictures, which showed them as small greenish peas.

High-Redshift Galaxies: Galaxies observed at large distances, whose light has been stretched by the expansion of the universe.
Stellar Feedback: The influence of stars on their surrounding interstellar medium through radiation, winds, and supernovae.
Cosmic Reionization: The period in the early universe when neutral hydrogen atoms were ionized by ultraviolet radiation.