![GPIM in Space.](https://www.nasa.gov/sites/default/files/styles/ubernode_alt_horiz/public/thumbnails/image/gpimthruster2.gif)
Technology Drives Exploration – Technologies needed for a sustainable human presence on the Moon and Mars continued to advance in 2019. Two tech demonstrations launched to improve how spacecraft travel and navigate – the Green Propellant Infusion Mission and our Deep Space Atomic Clock. |
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