Before assembly in a propulsion device, Miles Space captured imagery during tests of five thruster heads. The imagery was captured with long-exposure photography.

SAN FRANCISCO – Miles Space has demonstrated a water-fueled electric thruster with unusually lower power demands.

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Debra Werner is a correspondent for SpaceNews based in San Francisco. Debra earned a bachelor’s degree in communications from the University of California, Berkeley, and a master’s degree in Journalism from Northwestern University. She is a recipient...