Rside - The Universe and everything in it - Noah G

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Across
  1. 2. Part of a shadow in which all light from a given source is excluded.
  2. 6. An Italian physicist, mathmetician, engineer and astronomer who played a major role in the scientific revolution during the Renaissance, he improved the telescope.
  3. 8. A theory that places the Sun as the center of the universe, and the planets orbiting around it.
  4. 11. A small and relatively cool star on the main sequence.
  5. 14. When the moon is blocking the sun from the earth.
  6. 15. How the Earth turns.
  7. 16. When the earth is blocking the sun from the moon.
  8. 17. A portion of the light source is obscured by the occluding body.
  9. 20. When a meteoroid, comet or steroid impacts with the ground
  10. 21. The description of the cosmos where Earth is at the orbital center of all celestial bodies.
  11. 24. When the moon is fully illuminated.
  12. 25. Stars that have a lifetime that can range between 50 million to 20 billion years.
  13. 28. A white dwarf that has sufficiently cooled that it no longer emits significant heat or light.
  14. 29. Small, exist most of their life as dim red dwarfs.
  15. 30. When a red dwarf burns out, it turns into this.
  16. 31. An object in space made up of hot gases, with a core that is like thermonuclear reactor.
  17. 32. An astronomer and writer, and wrote many scientific books.
  18. 33. A Telescope that uses infared light to find celestial bodies.
  19. 35. Constellation, also known as the Great Bear.
  20. 36. People who studies the universe.
  21. 38. With a gravitational pull so strong that nothing can escape it.
  22. 40. The last step in the borth of a star, after the warm core begins to form.
Down
  1. 1. A small rocky or metllic body travelling through space.
  2. 3. Known as a shooting star, or a falling star.
  3. 4. Stars that form like low mass stars, except much quicker.
  4. 5. Space is filled with this. Made up of gas, mostly hydrogen, and dust.
  5. 7. This process creates an enormous amount of energy.
  6. 9. The shapes of the different illuminated portions of the Moon.
  7. 10. A mathmetician and astronomer who formulated a model of the universe that placed the sun rather than the earth at its center.
  8. 12. When a quarter of the moon is illuminated.
  9. 13. Is a scattergraph of stars.
  10. 18. Asterism in the constellation Ursa Major.
  11. 19. The smallest and densest stars known to exist in the universe.
  12. 22. Is the change in frequency of a wave, or other periodic event, for an observer moving relative to its source.
  13. 23. When massive stars collapse in on themselves causing a dramatic, massive explosion.
  14. 26. The first step in the birth of a star.
  15. 27. Is the angle between an objects rotational axis and orbital axis.
  16. 34. A specific pattern of stars in the sky.
  17. 37. When the Sun reaches its highest or lowest excursion.
  18. 39. Created the laws of planitary motion.