Who invented that -- Discovery and The Mulgara

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Across
  1. 2. (n.)an examination of opinions, behaviour, etc., made by asking people questions
  2. 4. (n.)everything that exists, especially all physical matter, including all the stars, planets, galaxies, etc. in space
  3. 6. (n.)one of the independent groups of stars in the universe
  4. 9. (n.)someone who works to protect the environment from the damaging effects of human activity
  5. 11. (adj.)extremely good; impossible, or very difficult, to believe; His works of art in designing this building is _________, which is why he has been awarded the Best Architect of the year.
  6. 13. (adj.)using new methods or ideas; The ___________ design of this product as well as its wonderful outlook gains the popularity because of both the functions and appearance.
  7. 14. (n.)any living thing, esp. an animal
Down
  1. 1. (v.)to gradually become less, worse, or lower; His popularity has __________d after rumours spread around.
  2. 3. (adv.)suddenly or obviously; The fact that COVID-19, once infected, can __________ worsen the internal organs in less than a day is shocking and terrifying.
  3. 5. (n.)an area on the edge of a large town or city where people who work in the town or city often live
  4. 7. (n.)the process of finding information, a place, or an object, especially for the first time, or the thing that is found
  5. 8. (adj.)not now existing; Dinosaurs became __________ long before humans were on earth.
  6. 10. (n.)a medicine or chemical that can destroy harmful bacteria in the body or limit their growth
  7. 12. (n.)The pandemic COVID-19 has caused the loss of millions of __________ since early 2020.