About this video
This video explains how scientists measure the size of the universe! They use a special tool called a cosmic distance ladder to figure out how far away stars and galaxies are.
🧠 Quiz & Trivia
Test your knowledge after watching!
Q1 What is the name of the trick astronomers use to measure distances?
Answer: Parallax
Q2 What did Hipparchus use parallax to calculate?
Answer: The distance to the moon
Q3 What does the cosmic distance ladder help us understand?
Answer: The size of the universe
Comments (0)
No comments yet — be the first!