Across
- 3. a large cloud of gas and dust in space
- 6. the brightness of a star as seen from Earth
- 9. an instrument that forms enlarged images of distance objects
- 10. the distance that light travels in one year
- 11. the brilliant explosion of a dying supergiant star
- 12. an object whose gravity is so strong that not even light can escape
Down
- 1. a pattern of grouping of stars that people imagine as a figure or object
- 2. the blue-white hot core of a star that is left behind after it's outer layers have expanded into space
- 4. a huge group of single stars, star system, star clusters, dust, and gas bound together by gravity
- 5. all of space and everything in it
- 7. a contracting cloud of gas and dust with enough mass to form a star
- 8. an instrument that separates light into colors