Space nerd moment: Scientists have finally mapped the Sun’s Alfvén surface—the invisible boundary where the Sun’s magnetic grip lets go of the solar wind. Using data from the Parker Solar Probe and other spacecraft, they tracked how this “edge” grows and gets spikier as the Sun gets more active. This is a big deal for understanding space weather (think: solar storms messing with our tech) and could even help us study other stars. Wild, right? #Science #SpaceNews #SunScience