Brown dwarf

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/brown-dwarf

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 a brown dwarf?A brown dwarf is a space object that is bigger than a planet but not big enough to be a star. It can fuse a little bit of deuterium, but it does not keep hydrogen burning like a true star.
2. How do astronomers find brown dwarfs?Because brown dwarfs are cooler, they glow mostly in infrared light. New infrared telescopes and surveys helped scientists spot them where visible light telescopes could not.

Substellar Object: A celestial body with a mass greater than a planet but insufficient for sustained hydrogen fusion.
Deuterium Fusion: The nuclear reaction where deuterium nuclei combine to form helium, releasing energy, possible in brown dwarfs.
Spectral Type: A classification system for stars and brown dwarfs based on their temperature and spectral lines.
Infrared Radiation: Electromagnetic radiation with wavelengths longer than visible light, often associated with heat.