Across
- 5. a cloud of dust and gas in space
- 6. a force that attracts an object to the earth
- 7. a star with a small mass and size
- 8. power made from physical or chemical resources
- 10. an emission nebula made of gas from old red giant stars
- 11. a star made from a large star collapses, it is the smallest and densest star known
- 13. The part of the atom that controls the rest of the cell, and holds the protons and neutrons
- 14. continuous band of stars that show up colorful rather than bright
- 15. a force acting on the outside
- 17. a bright star that has a low mass
- 19. the change in frequency of a wave or other periodic event
- 20. the measureable amount of matter
- 21. a white dwarf that has lost light and cooled significantly
- 22. a subatomic particle with a positive charge, that is found in the nucleus
Down
- 1. a star 10 times more massive than the sun
- 2. the event that begins a star's life
- 3. a mass of gas that shows the beginning of a star
- 4. a subatomic particle, found in the nucleus, and has no electrical charge
- 9. the force between neutrons and protons
- 12. Einstein's formula of mass energy equivalence
- 14. a star with a regular mass and size
- 16. a dense star made of electron-degenerate matter
- 18. joining 2 or more things together
- 21. a defined region in space that absolutely nothing can get out of