Astronomy Vocabulary

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Across
  1. 1. The process where new atoms are created.
  2. 4. Tilt is the reason Earth has these.
  3. 7. The series of steps a star goes through during its life: Stellar ___.
  4. 10. Good for measuring distances between stars/galaxies (2 words).
  5. 11. Good for measuring distances between planets (2 words).
  6. 15. When a planet is closest to the Sun.
  7. 16. Measurement of how bright a star is; lower numbers are brighter.
  8. 18. He figured out the Sun was in the center of the solar system.
  9. 20. Squeezing two atoms together; the reaction pushes a star outward.
  10. 22. Measurement of how much energy is given off by a star.
  11. 23. The model where the Sun is in the center of the solar system.
  12. 25. Fancy name for a cloud of dust and gas; our star will be this after its red giant stage.
  13. 26. The force that pulls a star inward, compressing it.
  14. 27. King of the planets with a huge red spot.
  15. 28. Season in Iowa when we are tilted away from the Sun.
Down
  1. 2. While all the gas giants have rings, this one has the best set.
  2. 3. One lap around the Sun.
  3. 5. The "pattern" of colors given off by stars and elements.
  4. 6. One ___ is equal to one day on a planet.
  5. 8. This element is fused inside of a star to make helium.
  6. 9. Model that explains how the universe might have came to be (2 words).
  7. 11. Position when a planet is farthest away from the Sun.
  8. 12. A huge "explosion" in space; happens only with super-sized stars.
  9. 13. Name for planets with rocky, solid surfaces.
  10. 14. A model where Earth is in the center of the solar system.
  11. 15. Was "disqualified" when the definition of "planet" changed.
  12. 17. Since galaxies are moving away from us, their spectra is ___.
  13. 19. The ONLY place we know of that has life on it.
  14. 21. Season in Iowa when we are tilted towards the Sun.
  15. 24. Generic term used to describe when an object blocks the Sun.