Professor Sara Seager is a Canadian-American astrophysicist and Professor of Physics, Planetary Science, and Aeronautics and Astronautics at the Massachusetts Institute of Technology, where she holds the Class of 1941 Chair. Her research ranges from the foundation of exoplanet atmospheres to innovative theories about life on other worlds to development of novel space mission concepts. She was Deputy Science Director of NASA’s TESS mission, Principal Investigator of the JPL–MIT CubeSat ASTERIA, and has led major efforts to design space-based direct imaging missions to discover another Earth. She now leads the Morning Star Missions to Venus in search of signs of life in Venus’ clouds. Her many honors include a MacArthur “genius” award, the Kavli Prize in Astrophysics, membership in the US National Academy of Sciences, and appointment as an Officer of the Order of Canada. She is the author of the textbook Exoplanet Atmospheres and also The Smallest Lights in the Universe: A Memoir.