Neil deGrasse Tyson Quotes
Private enterprise can never lead a space frontier. It's not possible because a space frontier is expensive, it has unknown risks and it has unquantified risks.
Citations
Tyson, Neil deGrasse. Space Chronicles: Facing the Ultimate Frontier. W. W. Norton & Company, 2012.
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Neil deGrasse Tyson is an American astrophysicist, planetary scientist, author, and science communicator.