Vocab Unit 3

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Across
  1. 5. Artificial body placed in space to collect information
  2. 6. the springing forth of the tide during new and full moon.
  3. 9. Year traveling a speed of light(distance)
  4. 11. Regular, repeating path object in space takes.
  5. 13. large body of matter with no definite shape
  6. 15. star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most matter
  7. 18. a spectrum of the electromagnetic radiation emitted by a source
  8. 21. Region of space where no radiation or matter can leave
  9. 22. rotating circumstellar disk of dense gas surrounding a young newly formed star
  10. 23. Relative mass by gravitational force
  11. 24. how astronomers explain the way the universe began
  12. 25. A system with stars, gas, dust; held by gravity.
Down
  1. 1. The wavelength of the detected radiation depends on the motion of the object when the photon was emitted
  2. 2. all existing space and matter.
  3. 3. optical instrument designed to make distant objects appear closer
  4. 4. Nuclei fuse to form heavier nucleus.
  5. 7. Deformations caused by another gravitational field
  6. 8. Two-dimensional graph designed for absolute magnitude of stars.
  7. 10. tide of minimal range occurring near the time when the Moon and the Sun are in quadrature
  8. 12. Unmanned exploratory spacecraft
  9. 14. Force that attracts us to earth
  10. 16. a small very dense star that is typically the size of a planet
  11. 17. Apparatus used for recording and producing Spectra
  12. 19. Galaxy with our solar system
  13. 20. Fixed luminous point in sky like our sun