In which year did first woman hired by the agency that operates the "Master Clock" become an American Astronomical Society member?
Isabel Martin Lewis Isabel Martin Lewis (July 11, 1881 – July 31, 1966) was an American astronomer who was the first woman hired by the United States Naval Observatory as assistant astronomer. In 1918, Lewis was elected a member of the American Astronomical Society. She was also a member of the Royal Astronomical Society of Canada and the Astronomical Society of the Pacific.
Meg Urry Claudia Megan "Meg" Urry is an American astrophysicist, who was from 2015–2016 the President of the American Astronomical Society, formerly on the Hubble space telescope faculty and was chair of the Department of Physics at Yale University 2007–2013. She is notable not only for her contributions to astronomy and astrophysics, including work on black holes and multiwavelength surveys, but also for her work addressing sexism and gender equity in astronomy, and science and academia more generally.