Across
- 2. The distance from the Earth to the Sun.
- 4. Planets are divided into __ classes.
- 5. The planets Mercury, Venus, Earth, and Mars are part of the ________ planets.
- 6. _________ Brightness is the brightness as a star appears to us.
- 9. Stars, ___________, local groups, super clusters
- 10. _______ stars are cooler than blue stars.
Down
- 1. The planets Jupiter, Saturn, Uranus, and Neptune are part of the ________ planets.
- 3. There are three different types of galaxies: eliptical, iregular, and _______.
- 7. A stars color indicates the ____________.
- 8. A huge assembly of stars, interstellar, gas, and dust.
