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Loading contentThe whole economic system of space activity — launch, satellites, ground systems, services, and the emerging markets in resources and on-orbit servicing — and the far larger value it creates on Earth. Increasingly it is driven by private capital as much as by governments.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.