ASTEROID DAY

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Across
  1. 2. Spectral line splitting due to the influence of magnetic fields is called
  2. 5. The Magellanic Clouds are
  3. 6. How many people have set foot on the Moon?
  4. 7. The first country to send man to the moon
  5. 9. A pulsar is actually a
  6. 11. When two heavenly bodies occupy the ecliptic longitude, the bodies said to be in
  7. 12. first American astronaut to float in space
  8. 13. What is the Latin name for the lunar seas?
  9. 16. Who had coined the term asteroid?
Down
  1. 1. Name the outer boundary of the sun's magnetic field?
  2. 3. What device first proved that Earth rotates on its axis?
  3. 4. The biggest asteroid known is
  4. 8. The study of the origin and evolution of the universe is known as the
  5. 10. planets has the greatest eccentricity?
  6. 12. Who's law suggested that there should be a planet between Mars and Jupiter?
  7. 14. The angular position of an object measured from a fixed point along the horizon is its
  8. 15. What is the name given to very bright meteors or bolides?
  9. 17. In which spectral region is it possible for astronomers to observe through clouds?