11) Give two examples of where the basic building blocks of life are found beyond earth.
12) What are stromatolites? How did they affect our ancient atmosphere?
13) How has the definition of “habitable environments” been expanded from meaning simply “any environment that humans can live in”?
14) In your opinion, where beyond earth should NASA spend the most resources looking for life and why?
15) In your opinion, should SETI focus more on broadcasting radio messages, putting messages on spacecraft, or listening for radio signals? Why?
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