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In the Kennedy Space Center’s Press Site auditorium, on Friday, July 20, 2018, agency and mission leaders speak to members of the media during a prelaunch briefing for the Parker Solar Probe mission. From left are: Betsy Congdon, Thermal Protection System engineer with Johns Hopkins Applied Physics Laboratory, Alex Young, solar scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, Nicky Fox, project scientist with the Johns Hopkins University APL, and Karen Fox of NASA Communications. The Parker Solar Probe will lift off on a United Launch Alliance Delta IV Heavy rocket from …