In the Kennedy Space Center’s Press Site auditorium, on Friday, July 20, 2018, Nicky Fox, project scientist with the Johns Hopkins University Applied Physics Laboratory, speaks to members of the media during a prelaunch mission briefing for the Parker Solar Probe mission. The Parker Solar Probe will lift off on a United Launch Alliance Delta IV Heavy rocket from Space Launch Complex 37 at Cape Canaveral Air Force Station in Florida. The spacecraft was built by Applied Physics Laboratory of Johns Hopkins University in Laurel in Maryland. The mission will perform the closest-ever observations of a star when it travels through the Sun's atmosphere, called the corona. The probe will rely on measurements and imaging to revolutionize understanding of the corona and the Sun-Earth connection.