Across
- 6. The movement of an object around another object.
- 9. A loose collection of ice and dust that orbits the sun, typically in a long, narrow orbit
- 10. A meteor that survives its passes through the earth's atmosphere such that part of it strikes the ground.
- 14. An object that orbits a star, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit.
- 16. The fully shaded inner region of a shadow cast by an opaque object, especially the area on the earth or moon experiencing the total phase of an eclipse.
- 18. An object that orbits a planet
- 19. A ball of hot gas, primarily hydrogen and helium, that undergoes nuclear function.
- 20. Eclipse An eclipse in which the moon appears darkened as it passes into the earth's shadow.
- 22. Tide A tide just after the first or third quarters of the moon when there is a least difference between high and low water.
- 23. Tide A tide just after a new or full moon, when there is the greatest difference between high and low water.
- 25. The force that attracts a body toward the center of the Earth, or toward another physical body having mass.
- 26. a distinct period or stage in a series of events of a process of change or development.
Down
- 1. The path of an object as it revolves around another object in space.
- 2. Either of the two days of the year on which neither hemisphere is titled toward or away from the sun.
- 3. A pattern or grouping of stars that people imagine to represent a figure or object.
- 4. The partially shaded outer region of the shadow cast by an opaque object.
- 5. Either of the two days of the year on which the sun reaches its greatest distance north or south of the equator.
- 7. An obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its illumination.
- 8. The spinning motion of a planet on its axis.
- 11. of universal gravitation
- 12. A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere
- 13. A system of organizing time that defines the beginning, length, and divisions of a year.
- 15. An imaginary line that passes through a planet's center and its north and south poles, about which the planet rotates.
- 17. A large, level basalt plain on the surface of the moon, appearing dark by contrast with highland areas.
- 21. A large, bowl-shaped cavity in the ground or on the surface of a planet or the moon, typically one caused by an explosion or the impact of a meteorite or other celestial body.
- 23. Eclipse An eclipse in which the sun is obscured by the moon.
- 24. The alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the sun and the moon.