Parker Solar Probe Countdown....

NASA's Parker Solar Probe and its United Launch Alliance Delta IV Heavy launch vehicle prepare for an unprecedented mission to "kiss the Sun." NASA launch schedule: https://go.nasa.gov/2JfklMB About the mission: https://go.nasa.gov/2ubAwFS The spacecraft aims to unravel 60 years' worth of mysteries surrounding the Sun’s corona. Watch this 4K video as NASA’s Launch Services Program continues the countdown to T-zero. Visit https://go.nasa.gov/SolarProbe to learn more and watch the historic launch on NASA TV in the coming weeks.