In the Kennedy Space Center's Operations and Support Building II, Thursday, Aug. 9, 2018, members of the media participate in a prelaunch mission briefing on NASA's Parker Solar Probe. Speaking to the media is Andy Driesman, Parker Solar Proble project manager, Johns Hopkins Applied Physics Laboratory. 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, 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 our understanding of the corona and the Sun-Earth connection.