UD physicist recognized for distinguished research on sun, solar wind, space physics https://www.udel.edu/udaily/2025/june/national-academy-sciences-william-matthaeus-plasma-space-physics/?utm_source=UDaily+Subscribers&utm_campaign=36a8b991cf-udaily_daily_mc&utm_medium=email&utm_term=0_0b5034716d-36a8b991cf-264637149