Isaacman also highlighted a push to rebuild NASA's workforce, shifting some key roles from contractors — who today make up about 75 percent of the agency's technical labor — back to in-house expertise. NASA leaders say that will give them more control over launch preparations, as it did in the Apollo and space shuttle eras.
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Historians have discovered some recognizable jottings in a 400-year-old copy of Ptolemy’s The Almagest. Plus, tectonic plates might’ve started moving earlier than we thought and how fluorescent-protein labels can be used as quantum sensors.
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