Space is the defining strategic frontier of the 21st century. America’s space leadership depends on harnessing the private sector to create wealth and focusing the public sector on limited yet critical security and scientific objectives.

While achieving supremacy in cislunar space (the region between Earth and the moon, including the moon’s surface) must be our immediate aim, it lacks the strategic coherence to sustain American leadership over the long term.

America’s commercial space sector provides the capability and incentives to make Mars exploration both symbolically and economically rewarding.

We need long-term goals to define success and clarify tradeoffs. A manned mission to Mars can do both.

China and Russia, our near-peer competitors in space, pose serious challenges. Beijing

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