Lyman-alpha emitter

High school (ages 12+)
Space & Astronomy

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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/lyman-alpha-emitter

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 related cosmological epochs?Cosmic Dawn, Epoch of Reionization, early galaxy assembly, and structure formation

Lyman-alpha Line: A specific spectral line of hydrogen emission resulting from electron transitions from the n=2 to n=1 energy levels.
Epoch of Reionization: The period in the early universe when energetic photons from the first stars and galaxies ionized the neutral hydrogen.
Galaxy Luminosity Function: A statistical description of the number of galaxies at different intrinsic brightnesses within a given volume of space.
Interstellar Medium: The matter and radiation that exist in the space between the star systems of a galaxy.