Across
- 4. the curved path that something (such as a moon or satellite) follows as it goes around something else (such as a planet)
- 5. U.S. government organization that is responsible for space technology, travel, and research
- 6. one or more objects that orbit around a star
Down
- 1. planets that are beyond our solar system
- 2. the branch of science that studies stars, planets, and other objects in outer space
- 3. our Sun and the planets that move around it