One of the big problems facing space exploration is that while most of us may generally admit it's cool and useful, we've lost our sense of wonder.
I imagine some may think this is a waste of launch fuel. I, however, really like anything that brings imagination and wonder, such as these kids' drawings, into our life.
@aleator The question of which fuel will be used to fly spaceships into space in the future obviously still needs to be discussed.
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