Astronomy Revision 2

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Across
  1. 7. First apparent contact between the moons disc and the suns disc.
  2. 9. Cause of 'fast solar wind' of charged particles
  3. 10. Filter for telescope to allow observation of the sun.
  4. 12. Stream of charged particles from the Sun's corona. Causes Aurorae on Earth
  5. 14. Equation used to calculate the likelihood of intelligent life in the galaxy
  6. 16. Average distance from Sun to Earth (150 million km)
  7. 17. Volcanic moon of Jupiter. Heated by tidal forces.
  8. 18. Region on earth that will observe a total eclipse when the moon passes in front of the sun
  9. 19. Less dark, slightly hotter part of a sunspot
  10. 20. Straight blue tail caused by excited ions
  11. 22. Darker, cooler region of a sunspot
  12. 23. Time it takes for the moon to rotate on it's axis once. A sidereal month
Down
  1. 1. Plane that the earth and other planets orbit the sun
  2. 2. Caused by earth passing through the tail of a comet. E.g. Perseids
  3. 3. Where on the sun do sunspots appear
  4. 4. The fusion series that takes place in the sun
  5. 5. Part of the suns atmosphere only visible during a total eclipse
  6. 6. Mars' two moons, likely captured asteroids
  7. 8. Increase in heat caused by the different gravitational force on a body in orbit
  8. 11. Unusual moon of Neptune. Will ultimately be broken up by tidal forces
  9. 13. Region on earth where the sun will look as if a bite has been taken out of it.
  10. 14. Curved tail on a comet caused by dust pushed off the comet by the radiation pressure
  11. 15. Coloured Lights in the night sky found at high latitudes
  12. 21. One way in which exoplanets are discovered. The planet passes in front of it's parent star
  13. 23. Time interval between full moons. A synodic month
  14. 24. Belt, Ring of rocks between the orbits of Mars and Jupiter