crossword

2. the collection of eight planets and their moons in orbit around the sun, together with smaller bodies
7. core forms through the coagulation of planetesimals until it is sufficiently massive to accrete a gaseous envelope.
8. material found between the planets of our Solar System
15. Study of natural processes and systems by effects on multiple bodies
16. Giant or gas planets

1. If material is to be brought together to form structures, then a long- range force is required, and gravity is the only known possibility.
3. the process or state of breaking or being broken into small or separate parts.
4. the coming together and cohesion of matter under the influence of gravitation to form larger bodies.
5. a swirling disk formed w/what was left after the sun formed
6. the degree of compactness of a substance.
9. explains why the planets are arranged in a circular, flat orbit around the sun
10. a large body of matter in orbit around the sun or a star and thought to be developing into a planet.
11. the quantity of rotation of a body, which is the product of its moment of inertia and its angular velocity.
12. planet composed primarily of silicate rocks or metals
13. The sun at an early stage of its formation, before becoming dense enough to sustain nuclear reactions.
14. a minute planet; a body that could or did come together with many others under gravitation to form a planet.