Planetary exploration not only brings us astonishing discoveries from other worlds, it inherently leads to innovation, because we invest in solving problems which have never been solved before. That in turn creates new businesses and economic growth. But more importantly, supporting a robust space program raises everyone’s expectation of what’s possible. With a space program, everyone in our society comes to believe and expect that any problem we face can be solved. It’s inherently optimistic. It’s part of our national character.

Read the full text of his letter.

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