The Scale of the Universe

What You'll Learn

Earth rotates on its axis once every 24 hours, causing day and night. The side facing the sun experiences day, while the opposite side experiences night.

Key Words

comet
galaxy

Steps

Step 1 — Read

Study the diagram and label the parts you recognize.

Step 2 — Do

Research and create a poster about one constellation. Include its stars, mythology, and when it's visible in your area.

Step 3 — Observe

Compare the before and after states.

Step 4 — Record

Write your conclusion: did the results match your hypothesis? What would you change next time?

Check Your Understanding

Question 1

1 of 3

What is a constellation?