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  1. This handbook reflects the latest NASA PP policy updates in NPR 8715.24, Planetary Protection Provisions for Robotic Extraterrestrial Missions and technical requirements of NASA-STD …

  2. To address both types of contamination concerns, a Planetary Protection category for each mission is assigned according to the combination of the type of encounter a spacecraft may …

  3. Role of Planetary Size Smaller worlds cool off faster and harden earlier. Larger worlds remain warm inside, promoting volcanism and tectonics. Larger worlds also have more erosion …

  4. The 2020 National Space Policy direction on planetary protection will be implemented through this National Strategy for Planetary Protection, and through the subsequent development of a …

  5. The Planetary Data Ecosystem defines the broad community of planetary scientists, engineers, mission specialists, data providers, data users and planetary science educators who have …

  6. Because interpretation of data and planetary for-mation models often go hand in hand, we present a brief summary of current models of planetary formation in the final section of this chapter.

  7. The National Academies’ Origins, Worlds, and Life: A Decadal Strategy for Planetary Science and Astrobiology 2023-2032, released in April 2022, provides recommendations from the Planetary …