SPACE QUIZ

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Across
  1. 1. The most abundant element in the universe
  2. 3. The rocket known as the “workhorse” of ISRO
  3. 5. The point in an orbit closest to the Sun
  4. 6. The reusable rocket developed by SpaceX
  5. 9. The planet which rotates on its side relative to its orbit
  6. 10. The dark, flat regions on the Moon's surface
  7. 11. The remains of a star after a supernova, consisting entirely of neutrons
  8. 13. A dying star that explodes
Down
  1. 2. The invisible boundary around a black hole
  2. 4. Mission which was the first to successfully soft-land a spacecraft on the Moon
  3. 7. The largest volcano in the solar system
  4. 8. Galaxy closest to Milky Way
  5. 12. Planet in which the day is longer than year