I want to know: How does a space suit on Mars work? Show me how it is pressurized, and how it is cooled. What's the glove design? None of that stuff can be bought off the rack. It does not exist. You can't just go to SpaceMart and buy those things.
Charles Darwin wrote a famous book in 18 gibberish. And that book was an interesting book, cuz it was called "Monkey-Monkey-Monkey-Monkey-Monkey-Monkey-You"