Across
- 5. A celestial object, thought to be a rapidly rotating neutron star
- 6. Year Distance light travels
- 8. Belt of Asteroids
- 9. a disk-shaped region of minor planets outside the orbit of Neptune
- 10. Stage after the White Dwarf
- 12. A system of two stars in which one star revolves around the other or both revolve around a common center
- 13. A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere
- 14. A system of two stars in which one star revolves around the other or both revolve around a common center
- 16. A system of millions or billions of stars
- 17. The angular view of a star from different points in the earth's orbit
- 18. A small rocky body orbiting the sun
- 19. A spherical cloud of small rocky and icy bodies postulated to orbit the sun beyond the orbit of Pluto
Down
- 1. a very bright star of large diameter and low density (relative to the Sun)
- 2. The remnant of a star that has collapsed, having an extremely dense state with no empty space between its atoms
- 3. The main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness
- 4. An apparatus for photographing or otherwise recording spectra
- 7. A group of stars forming an imaginary image
- 10. A region of space having a gravitational field so intense that no matter or radiation can escape
- 11. A diffuse cloud of gas and dust surrounding the nucleus of a comet
- 15. An explosion occuring in the lifecycle of a high-mass star
- 20. A celestial object consisting of a nucleus of ice and dust
- 21. All of space and everything in it