Karel Schrijver, is a stellar astrophysicist specialized in the study of the Sun and the space around it, stellar magnetism and its impacts on the environments of planets, and space weather. He was lead scientist and Principal Investigator on two of NASA's scientific spacecraft studying the Sun: TRACE and the Solar Dynamics Observatory. He (co-)authored over 200 research publications and articles. He wrote a textbook on solar and stellar magnetism, was lead editor on the five-volume series of Heliophysics books, and co-authored a popular science book entitled Living with the Stars (OUP, 2015) about the connections between the human body, the Earth, the planets, and the stars.