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SpaceX Tweaks Dragon 2 Design, Nixes Propulsive Landings

SpaceX’s upgraded Dragon capsules will not return astronauts to Earth for powered landings as originally envisioned, company boss Elon Musk said Wednesday, a design change that raises questions about the space transport firm’s plans to send commercial landers to the surface of Mars. Musk cited safety concerns for eliminating plans for propulsive Dragon landings in

NASA Spacecraft to Test ”Green” Propellant Passes Major Preflight Milestone

Like all rocket engines, the small thrusters that a spacecraft or satellite fires to maintain or change positions need fuel. Currently, many use hydrazine — a toxic and corrosive fuel that requires special handling and equipment. NASA”s Green Propellant Infusion Mission (GPIM) recently took another major step toward demonstrating the capabilities of a new propellant