Assessment of planetary protection requirements for spacecraft missions to icy solar system bodies / Committee on Planetary Protection Standards for Icy Bodies in the Outer Solar System, Space Studies Board, Division on Engineering and Physical Sciences, National Research Council of the National Academies.
"NASA's exploration of planets and satellites during the past 50 years has led to the discovery of traces of water ice throughout the solar system and prospects for large liquid water reservoirs beneath the frozen ICE shells of multiple satellites of the giant planets of the outer solar sy...
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