Universe

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Across
  1. 5. A rocky object in orbit around the sun
  2. 6. The U.S. agency which researches space
  3. 9. A celestial object that orbits a star
  4. 10. Two belts, an inner and outer one, surrounding Earth
  5. 14. A nickname for Mars
  6. 15. a light-collecting instrument that makes distant objects appear nearer
Down
  1. 1. an object that orbits some celestial body in space
  2. 2. The chemical element having the atomic number 6. It is the physical basis of all life on Earth
  3. 3. An artificial satellite that orbits Earth run by the United States and Russia
  4. 4. The fourth planet from the sun
  5. 7. Someone trained to travel into space for research and exploration
  6. 8. The force that attracts anything with mass, or bulk, toward any other thing with mass
  7. 11. An analysis, often made using a computer, of some conditions of a physical system
  8. 12. The lightest element in the universe.In Sun’s core every second 600 million tons of it is converted into helium.
  9. 13. The basic building block from which galaxies are made
  10. 16. A machine designed to convert energy into useful mechanical motion