Core module concept
An illustration from a NASA RFI issued March 25 describing its concept for a core module for the ISS to support commercial space station development. Credit: NASA

WASHINGTON — NASA’s proposed changes to its support of commercial space stations have created concern and confusion among companies developing them, the head of an industry organization warned.

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Jeff Foust writes about space policy, commercial space, and related topics for SpaceNews. He earned a Ph.D. in planetary sciences from the Massachusetts Institute of Technology and a bachelor’s degree with honors in geophysics and planetary science...