Early Saturday morning, the United Launch Alliance will send up its most powerful rocket, the Delta IV Heavy, along with a spacecraft bound for the Sun. On top of the rocket is NASAâ€™s Parker Solar Probe, embarking on the first ever mission into the Sunâ€™s atmosphere, known as the corona. Thanks to a big lift from the Delta IV, the Parker Solar Probe will get closer to the Sun than any human-made vehicle has been before â€” a mere 4 million miles away.
Getting to the Sun is actually super difficult. Thatâ€™s