Astronomy

1. effect, a process that occurs when gasses in Earth's atmosphere trap the Sun's heat
7. The dates when the Sun crosses Earth’s equator and the lengths of day and night are equal
8. The star at the center of our solar system
11. when a meteoroid burns up entering Earth’s atmosphere creating a streak of light in the sky
12. zone, the habitable zone
15. the study of stars planet and space
17. A meteoroid that lands on the Earth's surface
19. large object that meets the three requirements
21. a group of stars that looks like a particular shape in the sky and has been given a name
23. when the Sun reaches its highest or lowest in the sky the longest and shortest daylight of the year
24. a sphere of gas held together by its own gravity

2. when one object in space passes through the shadow of another object in space
3. to move in a spinning motion about its own axis
4. a small rocky object that orbits the Sun
5. the force by which a planet or other body draws objects toward its center
6. Units, the distance from the Sun to Earth's orbit
9. to circle around something or move in an orbit
10. An orbit is a regular andrepeating path that one object in space takes around another one
13. A natural satellite that orbits a planet or asteroid
14. cosmic snowballs of frozen gasses rock and dust roughly the size of a small town
16. objects in space that range in size from dust grains to small asteroids
18. the regular rise and fall of the ocean caused by the gravitational pull of the Moon and Sun
20. system, Our solar system consists of our star the Sun and everything bound to it by gravity
22. an imaginary straight line around which an object spins