MIT professor and astrophysicist Sara Seager is among 24 recipients nationwide of 2013 MacArthur Fellowships, sometimes referred to as “genius grants.”
The fellowships, which were established in 1981 and are awarded annually, carry a $625,000 prize which recipients are free to use as they see fit. Seager joins 18 MIT faculty members and three staff members at the Institute who have won MacArthur Fellowships.
The MacArthur Foundation cited Seager, 42, for “quickly advancing a subfield initially viewed with skepticism by the scientific community. A mere hypothesis until the mid-1990s, nearly 900 exoplanets in more than 600 planetary systems have since been identified, with thousands of more planet candidates known.”
Early in her career, Seager determined that the nature of an exoplanet’s atmosphere could be observed during an eclipse, when the planet’s atmospheric light spectrum is especially distinct from its much brighter host star. She then envisioned and formalized a comprehensive framework for guiding and interpreting observations of planets in this manner, including parameters for calculating planet density and remotely detecting biosignature gases (spectroscopic signatures of chemical compounds that are indicative of life) in their atmospheric spectra. Her early predictions led to the first detection of an exoplanet atmosphere by observations from the Hubble Space Telescope.
While continuing to create and refine theoretical models of exoplanet atmospheres and interiors, she is also spearheading advanced hardware design and space mission projects, including ExoplanetSat, a university collaboration to build low-cost “nano-satellites” to observe planetary transits. ExoplanetSat is a new concept for space science: a fleet of dozens of cheap copies of an ultra-small space telescope that will open up a new avenue for wide-ranging space exploration. A visionary scientist contributing importantly in every aspect of her field, Seager is finding new celestial frontiers and fueling curiosity about life in worlds beyond our reach.
Sara Seager received a BSc (1994) from the University of Toronto and a PhD (1999) from Harvard University. She was affiliated with the Institute for Advanced Study (1999–2002) and the Carnegie Institution of Washington (2002–2006) before joining the faculty at MIT, where she is Class of 1941 Professor in EAPS and the Department of Physics. She is the author of Exoplanet Atmospheres and Exoplanets (both 2010).
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