Question: what are the biggest questions in science?
Answer: 1 What is the universe made of? Astronomers face an embarrassing conundrum: they don't know what 95% of the universe is made of. ...  2 How did life begin? ...  3 Are we alone in the universe? ...  4 What makes us human? ...  5 What is consciousness? ...  6 Why do we dream? ...  7 Why is there stuff? ...  8 Are there other universes?