Science Crossword, Stars and Constellations

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Across
  1. 2. refers to an opaque object that emits thermal radiation.
  2. 4. means circle of animals
  3. 8. people born jan 22-feb 21
  4. 10. are formed when a gas of cloud out in the nebula or other region of interstellar space collapses under the influence of gravity
  5. 13. star patterns that have been discovered but have not been officially identified as constellation
  6. 15. these patterns of stars which are seen in the sky
  7. 17. CENTAURI red dwarf, next closest star to Earth.
  8. 19. people born on aug 22-sep 21
  9. 20. named after the Greek hero Herakles
  10. 22. means huge serpent in latin
  11. 24. imaginary line that passes through the earth
  12. 25. the difference in the two solar calendars is caused by an astronomical phenomenon
Down
  1. 1. is the measurement of the shift of a nearby object compared to distant objects when observed from two different positions.
  2. 3. is described in terms or magnitude and luminosity.
  3. 5. Major also known as "Big Bear" and is one of the most famous constellations.
  4. 6. unit of measure used to describe stellar distance
  5. 7. or north star, displays little movement
  6. 9. people born on sept 22-oct 21
  7. 11. invented the signs of zodiac different from the constellations after the effects of precession became generally known.
  8. 12. was a vain and boatful wife of King Cepheus of Ethiopia who lives next to her in the sky
  9. 14. in Roman is Hercules
  10. 16. people born on july 22-aug 21
  11. 18. myth claims that it is always visible in the northern hemisphere not in the southern hemisphere,
  12. 21. RIGEL young blue white star and one of the most luminous stars
  13. 23. most prominent star pattern in the sky