SXDF-NB1006-2

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/sxdf-nb1006-2

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 redshift?Spectroscopic redshift z ≈ 7.2
2. What is the light travel time?Light has traveled for over 13 billion years to reach Earth
3. Why is SXDF-NB1006-2 important for scientists?It helps scientists learn how the first stars and galaxies formed and how the early universe became bright and transparent.
4. How do scientists find galaxies like SXDF-NB1006-2?They use powerful telescopes, look for special light patterns called emission lines, and take long exposure pictures to see the faint glow.

Epoch of Reionization: A period in the early universe when neutral hydrogen was ionized by ultraviolet radiation from the first stars and galaxies.
Redshift: The stretching of light waves from distant objects due to the expansion of the universe, indicating their distance and recession velocity.
Lambda-CDM Model: The standard model of Big Bang cosmology, describing the universe's composition and evolution.