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Loading contentA miniaturised, ultra-stable atomic clock small enough to fly on a spacecraft. By putting precise timekeeping onboard, it enables one-way radiometric navigation — the spacecraft can determine its own position without the round-trip to a ground clock — a technology demonstrated in Earth orbit.
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Mission data, planetary science, space telescopes, and public-domain imagery.
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Orbital data, ephemerides, and small-body parameters for planets, asteroids, and comets.