Astronomy

2. “Earth’s twin” because similar in size, density, and structure
4. A streak of light in the sky that comes from a meteoroid burning up as it goes through Earth’s atmosphere
7. extremely hot during the day, extremely cold at night
10. Any natural or artificial object that revolves around another object (example – moon)
12. smaller Chunk of rock or dust in space
14. gravity
15. The belief that at one time everything in the universe was together in a single point which was small, hot, and
16. The area between Mars and Jupiter where most asteroids are found
17. Belief that the Earth was at the center with the Sun and planets revolving around it
18. outermost planet of our solar system
21. Pieces of rock revolving around sun mostly between orbits of Mars and Jupiter

1. Chunk of ice and dust orbiting sun in a long elliptical pattern
3. Has very visible rings made of chunks of ice and rock orbiting the planet
4. The spiral galaxy that our solar system is found in
5. Has evidence of water in distant past
6. Planet that has a giant red spot
8. Made up of the sun, planets and their moons, and smaller pieces of rock and dust
9. Another name for a meteor
11. Tilted 90 degrees on its axis
13. The belief that Earth and the other planets revolve around the sun in elliptical patterns and are kept in orbit by
19. only planet with confirmed life
20. A large group of stars, gas, and dust held together by gravity