Molly M. McCullough

Molly M. McCullough is an American astrophysicist renowned for her pioneering work in the characterization of exoplanet atmospheres and her instrumental contributions to major space telescope missions. Her research utilizes advanced spectroscopic techniques to probe the chemical composition and physical conditions of worlds orbiting distant stars. McCullough has held key positions at premier institutions including the Jet Propulsion Laboratory and the Space Telescope Science Institute, playing a critical role in the development and scientific utilization of the James Webb Space Telescope.

Early life and education

Molly M. McCullough developed an early interest in the Solar System and space exploration, inspired by missions like the Voyager program. She pursued her undergraduate studies in physics at the University of California, Berkeley, where she conducted research on stellar spectroscopy under the mentorship of Professor Geoffrey Marcy. McCullough earned her doctorate in astrophysics from the California Institute of Technology, with her dissertation focusing on atmospheric retrieval models for hot Jupiters observed by the Spitzer Space Telescope. Her graduate work was supported by a prestigious National Science Foundation Graduate Research Fellowship.

Career

Following her Ph.D., McCullough was awarded a NASA Postdoctoral Program fellowship to work at the Goddard Space Flight Center. She subsequently joined the permanent staff at the Jet Propulsion Laboratory in Pasadena, California, as a member of the NExSS (Nexus for Exoplanet System Science) initiative. In 2018, she accepted a senior scientist position at the Space Telescope Science Institute in Baltimore, Maryland, the operations center for the Hubble Space Telescope and the James Webb Space Telescope. There, she served on the JWST Instrument Science Team for the Near-Infrared Spectrograph, calibrating its performance for exoplanet observations.

Research and contributions

McCullough's research is centered on advancing techniques in transmission spectroscopy and emission spectroscopy to study exoplanetary atmospheres. She co-led a seminal study using the Hubble Space Telescope to detect water vapor in the atmosphere of the super-Earth GJ 1214 b, published in the journal Nature. Her team's analysis of data from the Transiting Exoplanet Survey Satellite identified key atmospheric constituents in the ultra-hot Jupiter WASP-121b, including evidence of vanadium oxide. A major focus of her recent work involves developing observational strategies and pipelines for the James Webb Space Telescope to search for biosignature gases in the atmospheres of terrestrial planets within the habitable zone.

Awards and honors

In recognition of her innovative research, McCullough received the NASA Exceptional Scientific Achievement Medal in 2017. She was also honored with the Annie Jump Cannon Award in Astronomy from the American Astronomical Society for her significant early-career contributions to exoplanet science. Her work has been supported by grants from the Heising-Simons Foundation and she has been an invited speaker at major conferences including the Extreme Solar Systems meeting and the Kepler Science Conference.

Personal life

McCullough is an advocate for increasing diversity in the STEM fields and frequently participates in public outreach programs with organizations like the Planetary Society. She resides in Maryland and is an avid hiker, having visited numerous national parks across the American Southwest.

Category:American astrophysicists Category:Exoplanetologists Category:NASA people Category:21st-century American women scientists