Problem 13
What is a constellation?
Problem 14
Which galaxies are sometimes shaped like footballs? A) spiral C) barred B) elliptical D) irregular
Problem 15
How many years would it take for light from Proxima Centauri to get to Earth?
Problem 15
What do scientists study to determine shifts in wavelengths of light? A) spectrum C) corona B) parallax D) nebula
Problem 17
Infer How do scientists know that black holes exist if these objects don't emit visible light?
Problem 17
How can a star's color provide information about its temperature?
Problem 18
Approximately how long does it take light from the Sun to reach Earth? In general, how does this compare to the amount of time it takes light from all other stars to reach Earth?
Problem 18
Recognize Cause and Effect Why can parallax only be used to measure distances to stars that are relatively close to Earth?
Problem 19
How does the size, temperature, age, and brightness of the Sun compare to other stars in the Milky Way Galaxy?
Problem 22
Write a detailed description of the Sun. What is it? What is it like?
