Parker Solar Probe

It's been the biggest unsolved mystery in solar astronomy, and now we're at the point where it's largely understood that you've got these weird, resonant magnetic waves pulsing through the plasma of the sun. And beyond just that, with parker solar probe going in so close, they've been able to start to measure the transitions in how the spacecraft is interacting with the magnetic field. It its out about 18 solar radii out from the center of sun. We're also finding that there's quiet once the mission gets in there.