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