Across
- 1. the boundary surrounding a black hole through which no light or mater can escape.
- 3. a star that has used up all of it's nuclear fuel
- 4. a powerful explosion caused by a dying star
- 5. the displacement of spectral lines towards longer wavelengths in radiation
- 8. a component of the universe, located through gravitational attraction
- 11. the stage where a star spends most of it's life
- 13. a range of light frequencies used to study stars
- 14. electromagnetic radiation left over from an early stage of the universe
Down
- 2. a large red star, late in it's life cycle
- 6. the tendency of an object to resist a change in motion
- 7. a cloud of dust and gas in space
- 9. an object that orbits a planet or star.
- 10. a scatter plot showing the relationship between luminosity and temperature
- 11. the measure of a star's brightness
- 12. the force that controls the motion of objects in the solar system and keeps objects in orbit