Rside 12.1 science -stars

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Across
  1. 3. the partially shaded outer region of the shadow cast by an opaque object.
  2. 5. is a description of the cosmos where Earth is at the orbital center of all celestial bodies.
  3. 8. sun's light hits the moon, moon = shade to earth
  4. 10. German mathematician
  5. 11. the fully shaded inner region of a shadow cast by an opaque object like the moon
  6. 12. A is a piece of stony or metallic debris which travels in outer space
  7. 14. is a type of stellar remnant that can result from the gravitational collapse of a massive star after a supernova.
  8. 15. the begining of a stars life
  9. 18. someone who study's the universe
  10. 21. is the matter that exists in the space between the star systems in a galaxy
  11. 26. An example of a __________is our sun
  12. 28. bigRocks in the universe
  13. 30. when you see quater of a moon
  14. 32. you can see them with your naked eye from earth, they make a constellation
  15. 33. is the change in frequency of a wave (or other periodic event) for an observer moving relative to its source
  16. 37. Patterns of the moons movement
  17. 39. early phases of a star
  18. 40. is an astronomical event that occurs twice each year as the Sun reaches its highest or lowest excursion relative to the celestial equator on the celestial sphere
Down
  1. 1. eclipse earth passes between the sun and the moon
  2. 2. a diagram that shows the life of a star
  3. 4. spend billions of years fusing hydrogen to helium in their cores
  4. 6. when you see a whole moon
  5. 7. Is a constalation
  6. 9. 23.5 degrees
  7. 13. is a theory that places the Sun as the center of the universe, and the planets orbiting around it.
  8. 16. stars in the universe
  9. 17. _________ go through a similar process to low mass stars in the beginning, except that it all happens much faster
  10. 19. a well known constalation
  11. 20. cooler and dimmer stars
  12. 22. italian astronomer
  13. 23. hotter and dimmer in lumonosity
  14. 24. stellar explosion that briefly outshines an entire galaxy,
  15. 25. the earth _____ rotates around the sun
  16. 27. is a telescope that uses infrared light to detect celestial bodies
  17. 29. is a bright streak of light in the sky a shooting star
  18. 31. a white dwarf that has cooled down to the temperature of the cosmic microwave background, and so is invisible
  19. 34. Polish astronmer
  20. 35. Black holes are places where ordinary gravity has become so extreme that it overwhelms all other forces in the Universe. Once inside, nothing can escape a black hole's gravity
  21. 36. hydroden atoms combine to form a heavier element of helium, this creates an enormous amount of energy
  22. 38. Greek astronomer