Across
- 2. small celestial bodies that orbit planets
- 4. Satellites designed to study outer space
- 5. study of life beyond the Earth
- 6. type of star our solar system orbits around
- 7. a tool used by scientists to look at planets and stars
Down
- 1. A person who studies life in the Universe
- 2. A red planet where scientists search for life
- 3. frozen water found on Mars, Saturn and Moons