Great Attractor

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/great-attractor

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 heavy is Great Attractor?Approximately 10^16 solar masses, with a significant portion attributed to dark matter
2. What is the scientific relevance?Crucial for understanding large-scale structure formation, dark matter distribution, and cosmic dynamics
3. Why can't we see the Great Attractor directly?The Milky Way's stars, gas, and dust block our view, so astronomers use indirect clues like galaxy speeds to learn about it.
4. How do scientists know the Great Attractor is pulling galaxies?They measure how fast galaxies move toward or away from us by looking at their redshifts and blueshifts, which shows a big pull toward a specific spot.

Peculiar Velocity: The velocity of a galaxy relative to the Hubble flow, indicating its motion due to local gravitational influences.
Hubble Flow: The general expansion of the universe, where distant galaxies recede from us at a speed proportional to their distance.
Baryonic Matter: The 'normal' matter that makes up stars, planets, and all visible objects in the universe.