Kikina
Roscosmos cosmonaut Anna Kikina continues training for a flight to the ISS on a Crew Dragon spacecraft in September despite not having a seat barter agreement finalized. Credit: Roscosmos

WASHINGTON — NASA and Roscosmos are in the final stages of completing a long-awaited agreement to allow Russian cosmonauts to fly on commercial crew vehicles and American astronauts on Soyuz spacecraft.

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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...