Across
- 5. a region of the solar system that starts just beyond the orbit of Neptune & that contains dwarf planets & other small bodies made mostly of ice
- 6. a small body from which a planet originated in the early stages of development of the solar system
- 7. the sun & all of the planets & other bodies that travel around it
- 9. a celestial body that orbits the sun, is round because of its own gravity, & has cleared the neighborhood around its orbital path
- 10. the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object
Down
- 1. a rotating cloud of gas & dust from which the sun & planets formed; also any nebula from which stars & exoplanets may form
- 2. a planet that has a deep massive atmosphere, such as Jupiter, Saturn, Uranus, or Neptune
- 3. one of the highly dense planets nearest to the sun; Mercury, Venus, Mars, & Earth
- 4. the time required for a body to complete a single orbit
- 8. the degree of elongation of an elliptical orbit (symbol, e)