Problem 22
Story Write a short science-fiction story about an astronaut traveling through the universe. In your story, describe what the astronaut observes. Use as many vocabulary words as you can.
Problem 23
Photomontage Gather photographs of the aurora borealis from magazines and other sources. Use the photographs to create a photomontage. Write a caption for each photo.
Problem 23
Explain how parallax is used to measure the distance to nearby stars.
Problem 24
Why are some constellations visible all year? Why are other constellations only visible during certain seasons?
Problem 24
Travel to Vega Vega is a star that is 26 lightyears away. If a spaceship could travel at onetenth the speed of light, how long would it take to reach this star?
Problem 25
What are black holes? How do they form?
Problem 26
Explain the big bang theory.
Problem 27
What can be learned by studying the dark lines in a star's spectrum?
