Astrophysics

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Across
  1. 3. Extremely bright, distant objects powered by massive black holes.
  2. 5. The stretching of light that shows galaxies are moving away.
  3. 7. Massive collections of stars, dust, and gas held together by gravity.
  4. 9. Colorful clouds of gas and dust where new stars are born.
  5. 10. Rapidly spinning neutron stars that emit beams of radiation
  6. 11. Another word for the entire universe.
  7. 13. A method for measuring star distance by observing slight position shifts.
Down
  1. 1. waves Ripples in space-time caused by massive cosmic collisions.
  2. 2. Sudden brightening events caused by explosions on the surface of a star.
  3. 4. Way The galaxy that contains our Solar System.
  4. 6. Planets that orbit stars outside our Solar System.
  5. 8. Powerful star explosions that can outshine whole galaxies.
  6. 12. Huge balls of hot gas that produce light and heat.