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Were there any specific changes to the spacecraft's mission or design that led to the change from "...may not represent the best expenditure of NASA's limited science funding" to "strong and vital"? The following comes from informal conversations with the project scientist about the history of the mission that I've had over the past ~6 ...


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How was DSCOVR fixed? What software changes were implemented to allow sufficiently dynamic attitude determination from star cameras? What kinds of algorithms were added to make this possible? The DSCOVR mission did suffer a "pointing hardware issue" in late June 2019, according to the 2020 NASA Earth Science Senior Review Report, pdf at: https://...


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