Across
- 2. the phase of the moon in which its whole disk is illuminated.
- 4. an object or something else that isn't a star but that orbits a planet
- 5. section of a shadow where all light from a particular source is blocked
- 7. the tide when the water is at its greatest elevation
- 12. an aura of plasma that surrounds the Sun and other stars.
- 13. an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination.
- 14. a large planet mostly composed of helium and/or hydrogen
- 15. We can identify a solid item by its frequency, wavelength, and amplitude. Waves, in principle, transport energy from one area to another.
Down
- 1. Circular motion of objects around points in space
- 3. The region of the universe near the sun that includes the sun, the nine known major planets and their moons or satellites, and objects such as asteroids and comets that travel in independent orbits.
- 6. National Aeronautics and Space Administration.
- 8. The force that pulls a body toward the earth's core, or any other mass-bearing physical body.
- 9. an optical instrument designed to make distant objects appear nearer
- 10. any natural body outside of the Earth's atmosphere.
- 11. frozen leftovers from the formation of the solarsystem composed of dust, rock, and ices