Big Bang Vocab.

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Across
  1. 2. - A colorless, odorless, and highly flammable gas. The chemical element of atomic number 1.
  2. 4. - the branch of science that deals with celestial objects.
  3. 5. - A man who discovered galaxies outside of the milky way galaxy.
  4. 10. - Helped discover cosmic microwave background energy.
  5. 13. - Faint and nearly uniform light radiating and filling the universe, representing the cool light still visible from the big bang.
  6. 16. - A group of planets, stars, dwarf planets, black holes, etc all collectively together in a space made of dust and different things.
  7. 17. - A colorless, odorless, tasteless, nonflammable noble gas.
  8. 18. - A scientist who studied physics and contributed a lot to the study of space.
Down
  1. 1. - Helped discover cosmic microwave background energy.
  2. 3. - Developed the theory on how stars produce elements.
  3. 6. - The entire span of all types of electromagnetic radiation, organized by frequency, wavelength, and photon energy.
  4. 7. - The space where everything we’ll ever know is in.
  5. 8. - The narrow portion of electromagnetic spectrum that the human eye can see. It starts at Violet and ends at red.
  6. 9. - The scientific model explaining that the universe began 13.8 billion years ago from an extremely hot, dense point exploding and has been cooling and expanding ever since.
  7. 11. - An apparatus for photographing or otherwise recording.
  8. 12. - power derived from the utilization of physical or chemical reactions, especially to provide light.
  9. 14. - A stretching light toward longer and redder wavelengths as an object moves away from the observer or as the universe expands.
  10. 15. - the displacement of the spectrum to shorter wavelengths in the light coming from celestial objects coming toward the observer]