Across
- 2. year, the distance that light would travel in a full year
- 3. pieces of rock that orbit around the sun
- 4. astronomy is the study of stars, planets and space
- 7. a measure of a body's brightness
- 10. the name given to the system orbiting the sun
Down
- 1. a collection of stars , held together by gravit
- 3. a person who travels and works in space
- 5. are sati kites or planes
- 6. our closest star, that provides us with light and heat, and as a result, food and water
- 8. belt, a belt of asteroids orbirting the sun that exists mars and Jupiter
- 9. hole, a region in space that has an enormous force of gravity that light can not escape
- 10. huge spheres of burning gas