Across
- 1. the amount of matter in an object
- 3. a space vehicle designed to explore the surface of planets or other celestial body
- 5. the path of one object around a central object
- 7. the blocking of the sun's light that can occur during a new moon
- 8. the blocking of sunlight to the moon
- 9. the movement of an object as it spins around a central point
- 11. an instrument that makes distant objects visible and brighter
Down
- 2. a natural or artifical object that orbits another object
- 4. a measure of the force of gravity of an object
- 6. to light up
- 7. one of the 4 periods of the year on Earth
- 10. the rising and falling of the surface level of bodies of water because of the gravotational attraction of the moon, sun, and solids and liquids on Earth