How did Elon Musk attract attention to possible living conditions on Mars in 2015? 1) He produced a documentary film. 2) He simulated living on Mars for 6 months 3) He suggested bombing Mars poles with nuclear bombs. 4) He went...

How did Elon Musk attract attention to possible living conditions on Mars in 2015? 1) He produced a documentary film. 2) He simulated living on Mars for 6 months 3) He suggested bombing Mars poles with nuclear bombs. 4) He went on Mars. 5) He became a member of Greenpeace