Across
- 1. a powerful and luminous stellar explosion
- 3. a small rocky body that orbits the Sun
- 5. the planet with visible rings
- 7. eclipse: where the sun is obscured by the moon.
- 14. layers of gases that envelop a planet, held in place by gravity
- 16. way: the universe that we are in
- 17. groups of stars that look like recognizable objects
- 19. only planet where water exists
- 20. a satellite that orbits the planet
- 21. the blue planet
- 22. dwarfs: when a white dwarf runs out of fuel and dies
Down
- 2. earliest stage of a star’s life
- 4. consists of everything that exists
- 6. cosmic snowballs of mostly ice (frozen gases and rock)
- 8. the star in the center of our solar system
- 9. occurs twice a year where the sun crosses the celestial equator
- 10. hole: a region of spacetime where gravity is so strong that nothing can escape from it
- 11. outer most layer of the Sun
- 12. ball-shaped mass of super-heated gas that produces and gives off light, heat, and energy.
- 13. a collection of many billions of stars held together by gravity
- 15. a small body of matter from outer space that enters the earth's atmosphere
- 18. how all stars start, is a large cloud of gas and dust