OrbitFab Benchmark tanker
Orbit Fab's first tanker spacecraft will carry hydrogen peroxide propellant to refuel thrusters developed by Benchmark Space Systems.

Two startups are partnering on technology that they hope can jump-start the market for in-space refueling of satellites.

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Jeff Foust has more than a decade of experience writing about space policy, entrepreneurial ventures and regulatory affairs. In 2001, he established spacetoday.net to aggregate and summarize the day's space-related news stories. In 2003, he started The...