Debra Fischer

Debra Ann Fischer is a professor of astronomy at Yale University researching detection and characterization of exoplanets. She was part of the team to discover the first known multiple-planet system.

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The EXtreme PREcision Spectrometer (EXPRES), developed at Yale by astronomer Debra Fischer, has captured ultra-precise measurements of the starlight from a distant planet’s sun. Astronomers have now analyzed those measurements to determine the orbit of planet 55 Cnc e, nicknamed the “hell planet.”