Week 8 ESS

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Across
  1. 2. A proton or neutron
  2. 4. Natural satellite of the Earth
  3. 5. The systems of stars and interstellar matter that make up the universe
  4. 7. Everything we can touch, feel, sense, measure or detect
  5. 9. The creation of new atomic nuclei
  6. 13. Positively charged centre of an atom
  7. 15. Relating to a star(s)
  8. 16. A large astronomical body that is neither a star nor a stellar remnant
Down
  1. 1. radiation Radiation that travels in waves and has both electric and magnetic fields
  2. 3. The most prevalent cosmological model that can explain the existence of the observational universe
  3. 6. The curved path of a celestial object such as the Earth around the Sun
  4. 8. Body of interstellar clouds
  5. 10. Relating to the universe/cosmos
  6. 11. A self-luminous celestial body of gas
  7. 12. The boundary of a black hole
  8. 14. A pure substance that consists of only atoms
  9. 16. a cloud of gas and dust in space believed to develop into a star