Astronomy Revision 2

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