Across
- 2. how bright an object appears on Earth
- 4. a dying star in the final stage
- 6. the stellar core left after a dying star
- 7. small, rocky object that orbits the sun
- 10. complete range of all types of radiation
- 14. rotating neutron stars
- 16. forms when a massive star runs out of fuel
- 17. the brightest star in the sky
- 18. a group of stars that make a shape
- 19. graph of stars plotted
- 21. gaseous cloud made up of the Sun and planets formed by condensation
- 22. how much matter something contains
- 23. the apparent magnitude of an object
- 24. difference in apparent object seen in two different points
- 25. force in planets that draw them together
Down
- 1. supermassive black hole
- 3. a property of matter that stays at rest
- 5. when two stars orbit around a common centre of mass
- 8. small body of mass in the solar system
- 9. a cloud of gas and dust to make a star
- 11. the explosion of a star
- 12. a place in space where gravity pulls so much
- 13. a union by melting
- 15. rotating disk
- 20. frozen snowball of gases, rock, and orbit