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Comparative Planetology and Climate Change
Pages 18-19

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From page 18...
... faze {~: ~~ ~~f~ ~;f5~:ffff~ ~f/~'f:~ Analysis of diverse surface materials of the inner planets, determination of their ages, and assessment of the processes that have affected them are needed to understand how important elements have evolved differently on each of the planets. Data on oxygen, hydrogen, and other atmospheric gases provide clues to planetary compositions and atmospheres, early solar-system processes, and environments relevant to the origin of life.
From page 19...
... In addition, the Explorer will make measurements of winds and atmospheric chemical Guiding Themes Addressed Important Planetary Science Questions Addressed composition, and other measurements nologies required for survival of a will be obtained during descent and ascent. This set of experiments should provide researchers with spacecraft in Venus's extreme environ mental conditions.


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