The Cliff (cosmological object)

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/the-cliff-cosmological-object

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 Cliff in space?The Cliff is a huge wall made of dark matter that is part of the Hercules‑Corona Borealis Great Wall, one of the biggest structures we can see in the universe.
2. Why is The Cliff so important to scientists?It shows how dark matter, which is most of the universe’s matter, pulls galaxies together and helps scientists test their ideas about how the universe grew.

Cosmic Web: The large-scale, filamentary structure of the universe, composed of dark matter, galaxies, and voids.
Lambda-CDM Model: The standard model of cosmology, describing a universe dominated by dark energy (Lambda) and cold dark matter (CDM).
Gamma-Ray Burst (GRB): Extremely energetic explosions in the universe, used as cosmological probes due to their high luminosity and distant visibility.
Structure Formation: The process by which initial density fluctuations in the early universe grow under gravity to form galaxies, clusters, and superclusters.