Stars and Galaxies

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Across
  1. 3. Electromagnetic waves with wavelengths longer than visible light but shorter than microwaves.
  2. 4. The transfer of energy through matter or space as electromagnetic waves, such as visible light and infrared waves
  3. 6. electromagnetic waves with wavelengths longer than gamma rays but shorter than ultraviolet waves; used in medicine and astronomy.
  4. 8. Waves of energy that provide us with the visible light spectrum (the colors we see)
  5. 10. Electromagnetic waves with wavelengths longer than X-rays but shorter than visible light waves; can cause tans, sunburns, and skin cancer
  6. 12. The transfer of energy by the movement of electromagnetic waves or subatomic particles
  7. 13. Category of stable stars in the middle developmental phases that plot along a continuous diagonal belt on the Hertzsprung-Russell Diagram.
  8. 15. A large grouping of stars in space.
  9. 18. The death of a large star by explosion
  10. 19. A celestial body consisting of a mass of gas help together by its own gravity in which the energy is generated by nuclear reactions in its interior.
  11. 21. A continuum of all electromagnetic waves arranged according to frequency and wavelength, from radio waves to gamma radiation
  12. 22. A galaxy with very little symmetry that does not fit into any category
Down
  1. 1. A Hertzsprung-Russel Diagram plots the surface temperature (color) of stars vs. their luminosity (aka _________).
  2. 2. Electromagnetic waves with the longest wavelengths, lowest frequencies, and lowest energy.
  3. 5. The distance between any two corresponding points on a wave, such as from crest to crest
  4. 7. Large cloud of gas and dust in interstellar space; the location of star formation.
  5. 9. All of space and the matter space contains.
  6. 11. The remains of a star or other large object that has collapsed under its own gravity to form a super dense object with gravity so strong that light cannot escape its pull.
  7. 14. A galaxy with a long oval shape, a bright center, no apparent internal structure or spiral arms, and very little dust or gas.
  8. 16. Electromagnetic waves with the shortest wavelengths, highest frequencies, and highest energy; produced by supernovas or the destruction of atoms.
  9. 17. A galaxy with a bulge in the center and very distinct long arms winding around the center.
  10. 20. The intensity, or brightness, of light from a celestial body, which can be used to identify the body's characteristics.