Earth-Sun-Moon

1. the star that is the main source of light at the center of our solar system
2. a space object that orbits around another object
4. the relative size of things
7. the force exerted from one object of mass to another object of mass
10. a massive object that has such high gravitational force that nothing can escape
11. when the moon is becoming less and less illuminated over time
14. a division of time marked by similar weather and sunlight hours
16. to move in a circle around a central object, such as a star
18. to move in a circular motion, spinning
21. to shine light on an object and make it visible
22. the cyclical change of water levels on Earth

1. the sun, the planets that orbit the sun, and other objects that orbit the sun
3. when the moon is becoming more and more illuminated over time
5. a collection of dust, planets, stars, and moons held together by gravity
6. a rock sphere that travels around a planet
8. the amount of time it takes for a planet to complete one orbit around a star or stars
9. when an object blocks out another object (eg. lunar, solar)
12. an imaginary line that an object rotates or revolves around
13. the time it takes for the Moon to orbit around the Earth
15. the prefix for things outside of our solar system
17. the nearly circular path a smaller object travels around a larger object
19. to be off of one’s natural rotation axis, measured in degrees
20. a space object that orbits around a star