Across
- 4. the apparent change in a star's position across the sky.
- 5. a measurement of how much matter an object has.
- 7. a range of frequencies that make up light.
- 8. a type of star that is larger and brighter than main sequence stars of the same temperature.
Down
- 1. a powerful explosion that happens in larger stars when they use up all of the fuel they have.
- 2. Stars that are smaller and relatively dim.
- 3. a term describing stars that have a normal relationship between brightness and spectrum.
- 6. a method astronomers use to measure distance to objects in space by comparing their positions from different points on Earth.
- 7. giant, glowing spheres of gases that produce light and heat by using nuclear reactions.