CNBC's Investing in Space newsletter offers a view into the business of space exploration and privatization, delivered straight to your inbox. Low Earth orbit satellite constellations are all the rage, but up to this point they've been the prospective domain of commercial entities. SDA is about to launch the second mission of its constellation known as the "Proliferated Warfighter Space Architecture," or PWSA. The Transport satellites in Tranche 0 cost about $15 million each, according to Jennifer Elzea, the agency's chief of strategic engagement. Investing in Space programming note: I will be out next week, but back the following for the World Satellite Business Week conference in Paris!

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Persons: Lockheed Martin's, CNBC's Michael Sheetz, Lockheed Martin, Chris Winslett, Winslett, Jennifer Elzea, Elzea, It's, Mike Eppolito, we'll, Eppolito Organizations: Lockheed, Space Development Agency, U.S . Space Force, Transport, Pentagon, SpaceX, Space Force, Command, PWSA, World Locations: tranches, York, Paris