Across
- 3. System-
- 4. collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
- 7. all existing matter and space considered as a whole; the cosmos.
- 8. Way-is the spiral galaxy containing our solar system.
- 9. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
Down
- 1. system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
- 2. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
- 5. the star that orbits the earth.
- 6. a science that deals with celestial objects, space, and the physical universe as a whole.