Across
- 3. The final stage of evolution that no longer emits light or heat.
- 4. Stars with less than half the mass of the sun.
- 6. A large cloud of gas and dust in space.
- 12. Neutrally charged.
- 14. The strongest of the four forces.
- 15. The final stage of evolution for stars with little mass.
- 16. The equation that Einstein made to find out the energy of something.
- 17. When a star becomes a supernova and no electromagnetic radiation is able to escape.
- 18. Many large stars grouped together that help make up the universe.
- 19. Stars formed by the collapse of a massive star after a Super Nova explosion.
- 20. Negatively charged.
- 21. A star that is just under the size of the sun or up to 8 times it.
- 23. The heaviest part of an atom.
- 24. Stage of the star before Nucleosynthesis starts.
Down
- 1. The stage of a star where a star runs out of hydrogen.
- 2. 90% of the stars in the universe are this type of star.
- 5. The moon is being affected by this force due to Earth.
- 7. A nebula in the shape of a ring.
- 8. Positively charged.
- 9. Mass multiplied by the velocity of light squared equals...
- 10. Stars that have at least three times the mass of the sun.
- 11. The force that causes physical objects to go towards each other.
- 13. The magnitude or level of something.
- 22. An explosion that causes a star to become very bright.