Ch 10 Exploring Space

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Across
  1. 2. this star group is 2 or 3 stars held together by gravity
  2. 4. this type of telescope uses radio waves to detect objects in space that give off little light
  3. 5. a huge star system that covers many light-years of space
  4. 7. a cloud of dust, gases and debris
  5. 9. the Milky Way is the ____ in which we live
  6. 11. a neutron star that spins rapidly on its axis
  7. 13. a chunk of frozen gases, water and dust that orbits the sun
  8. 14. the scientific study of the stars
  9. 16. this color star is the coolest
  10. 17. stars are glowing balls of gas that produce _____
  11. 21. this color star is the hottest
  12. 22. this type of telescope bends light to make objects look bigger
  13. 24. this breaks down the light given off by a star into all its colors
  14. 25. the brightness of a star
  15. 27. a rocky object in space that is smaller than an asteroid, burns up due to friction
  16. 28. when a supergiant star collapses and disappears from space this is formed
  17. 29. smaller stars like our star are called _____
  18. 30. a rocky object that hits earth's surface
Down
  1. 1. a group of stars that form a pattern
  2. 3. this system contains 2 stars
  3. 6. this magnitude is how bright a star appears to us
  4. 8. using the position of the stars to determine one's destiny
  5. 10. this is a cluster of galaxies traveling through space together
  6. 12. the measurement of a star's apparent movement over time
  7. 15. this type of telescope uses mirrors to reflect light to make objects look bigger
  8. 18. this magnitude is the true brightness of a star; tells us how bright the star really is
  9. 19. the largest and brightest stars
  10. 20. stars that regularly or repeatedly change in magnitude are called ____ stars
  11. 23. made of irregularly shaped pieces of rock, metal and dust
  12. 26. when an existing star flares up and becomes brighter than normal, is is called a ______