Infinity and Beyond

5. When an object moves around another object
7. the planet on which we live
8. the natural satellite of the earth,visible by reflected light from the sun
9. a fixed celestial body of gas that shines bright
12. system the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets
13. astronomical system where earth is at the center
15. The whole of space and all the stars, planets, and the other forms of matter and energy in it
16. A collection of stars and interstellar material held together by gravity

1. The universal force of attraction acting between all matter
2. way the galaxy in which our solar system is located
3. astronomical system where the sun is at the center
4. When an object spins on its axis
6. a celestial body moving in an elliptical orbit around a star
10. a well thought-out explanation using the scientific method
11. bang a theory of how our universe originated from singularity, one small point
12. the star around which the earth orbits
14. The resistance of an object to any change in its motion, including a change in direction