'Green' Alternative Fuel Set for First In-Space Test

Satellites love hydrazine – a type of space propellant – but it’s toxic to people and extremely difficult to handle. A non-toxic alternative will be put to the test with NASA’s Green Propellant Infusion Mission (GPIM), set to launch on a SpaceX Falcon Heavy rocket.

from NASA https://go.nasa.gov/2N69GuQ
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