Astronomy

3. A type of motion where one object orbits around another object
5. Large marsupial
6. around it
8. Has a trunk
10. the model in which the Earth is the center of the universe and everything
14. The Universe began in an incredibly hot and dense expansion 14 billion years
15. A region of stars in the night sky, e.g. Ursa Major
18. Bowl shaped holes in surfaces caused by the impact of celestial objects
19. A large chunk of ice, dust, and rock that orbits the sun
20. the model in which the sun is the center of the universe and everything
21. The North Star, located almost directly above the North Pole
22. A huge explosion of gases and charged particles
24. A dark area on the Sun’s surface that is cooler than the area around it
26. A device with mirrors or lens that lets us look far into space
27. The moon passes between Earth and the sun and blocks the light
28. Likes to chase mice
29. A day when the Earth’s axis is most inclined towards or away from the sun

1. A period during which the visible surface of the moon increases
2. A period during which the visible surface of the Moon decreases
4. Everything that exists; all matter, energy and space
7. around it
9. The distance light travels in one year
11. Days when the hours of sunlight equals the hours of darkness
12. The average distance between Earth and the sun
13. Man's best friend
14. Flying mammal
16. The Moon passes through Earth’s shadow and doesn’t reflect as much light
17. Small, rocky, irregularly shaped objects orbiting the sun
23. A type of motion where an object turns on its own axis
25. Collections of gas held together by gravity; create light through nuclear reactions