https://phys.org/news/2018-08-nasa-parker-solar-probe.html > "Eight long years of hard work by countless engineers and scientists is finally paying off," said Adam Szabo, the mission scientist for Parker Solar Probe at NASA's Goddard Space Flight Center in Greenbelt, Maryland. > Nestled atop a United Launch Alliance Delta IV Heavy—one of the world's most powerful rockets—with a third stage added, Parker Solar Probe will blast off toward the Sun with a whopping 55 times more energy than is required to reach Mars. About the size of a small car, it weighs a mere 1,400 pounds.