UNN-Riddle

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Across
  1. 4. Whose cat is the most famous in the scientific world
  2. 5. An extreme sport related to mountains
  3. 7. A knot that consists of two half knots, one left and one right
  4. 9. The vehicle of the aliens
  5. 10. A term related to navigation in the ocean
Down
  1. 1. A device that measures angular velocity
  2. 2. Submarine mountains formed in the ocean
  3. 3. The main weapons of the airforce
  4. 6. What Newton discovered
  5. 8. An interstellar structure that resembles a human eye