Blue Origin completes 35th New Shepard mission

• Propellant Refueling and On-Orbit Transfer Operations (PROTO) & Microgravity Ullage Detection (MUD), Carthage College: Carthage College Space Science program’s PROTO experiment is collaborating with NASA Johnson Space Center to test new alternatives to measure spacecraft propellant levels in microgravity. MUD is a non-invasive method to locate the liquid-vapor interface in spacecraft fuel tanks during microgravity. The system incorporates acoustic vibrations and external sensors to detect whether the tank wall is in contact with liquid or gas, which is critical for safe in-space refueling. This experiment is flying for the third time with New Shepard. Both payloads are supported by NASA’s Flight Opportunities program and the Wisconsin Space Grant Consortium.

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Original Post Date: 9.18.25

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