crossword puzzle

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Across
  1. 2. Ursa Major, also known as the big bear.
  2. 3. are created when materials in the disk around a preexisting star begins to condense around a rock.
  3. 4. patterns of stars seen in the sky.
  4. 6. Equatorial constellations, lie on the other side of the celestial equator.
  5. 8. is the measuremnt of stars
  6. 10. the difference in two solar calendars is caused by an astronomical precession.
  7. 12. Betelgeuse, a red star that doesnt shine wity a steady light as it expands.
  8. 13. Cassiopeia, was a vain and boastful wife of king cepheus of ethiopia.
  9. 14. Polaris, displays very little movement in the sky.
  10. 16. Draco, is always visible in the northern hemisphere but not in the southern Hemisphere.
  11. 17. formed when a gas cloud out in the nebula or other region of interstellar space.
  12. 18. Rigel, a young blue white star and one of the most luminous of all stars.
  13. 21. is the power of a star
Down
  1. 1. body, an opaque object that emits thermal radiation.
  2. 2. constellations, constellations that move counterclockwise directions.
  3. 5. Star sign, one of the 12 zodiac signs that the sun is in on the birth date.
  4. 7. magnitude, astronomers describe the actual brightness of a star.
  5. 9. Parsec, the standard unit of distance
  6. 10. Axis, apparent motion occurs due ro the rotation of the earth.
  7. 11. Shift, stars seem to shift their positions against the farther stars.
  8. 12. stars patterns that have been discovered but not been officially identified as a constellation.
  9. 13. one of the prominent star patterns in the sky. Known as the 'Hunter'.
  10. 15. plane, is the imaginary line traced by the sun in the sky.
  11. 19. Giant Stars, those with a mass of more than 10 times higher than that of our sun.
  12. 20. Hercules, a constellation named after the greek hero Herakles.