Henrietta Leavitt was born in Cambridge ... As a senior in 1892, Leavitt discovered astronomy. After graduation she took another course in it, but then spent several years at home when she ...

Henrietta Swan Leavitt, an astronomer ahead of her time, discovered the relationship between a star’s brightness and its fluctuation period. This breakthrough allowed Edwin Hubble to measure galaxy ...

Henrietta Leavitt ... to calculate distance. Leavitt published her findings in 1912 -- in a chart of 25 cepheid periods and their apparent brightness. Using this, astronomers only needed to ...