Henrietta Swan Leavitt (/ ˈlɛvɪt /; July 4, 1868 – December 12, 1921) was an American astronomer. [2][1][3] Her discovery of how to effectively measure vast astronomical distances led to a shift in the …

Dec 8, 2025 · Henrietta Swan Leavitt, American astronomer known for her discovery of the relationship between period and luminosity in Cepheid variables, pulsating stars that vary regularly in brightness …

Henrietta Leavitt discovered the relationship between the luminosity (brightness) and period (length of pulsation) of Cepheid variable stars; this would be a key step in measuring distance in space, even …

Henrietta Leavitt was an astronomer who opened the door to a dramatic enlargement in the size of the known universe. She found that a certain type of star, the Cepheid variable, pulses at a rate that's …

Henrietta Swan Leavitt (July 4, 1868 - December 12, 1921) was an American astronomer who worked at the Harvard College Observatory from 1893 until her death in 1921 (Johnson, p.25).

Leavitt, Henrietta Swan (1868–1921) American astronomer who established a standard by which to chart the magnitude of the stars and discovered the period-luminosity of Cepheid variable stars …

Mar 27, 2024 · Leavitt, working as a poorly paid member of a team of mostly women who cataloged data for the scientists at the observatory, found a way to peer out into the great unknown and measure it. …

The discovery of how to effectively measure vast distances to remote galaxies is the legacy of a great American female astronomer, Henrietta Swan Leavitt. Her work led to a monumental shift in our …

Henrietta Leavitt was an American astronomer who discovered the relation between the luminosity and the period of Cepheid variables. This was a vital step in measuring the distance to remote galaxies.

While studying Cepheid variable stars, American astronomer Henrietta Swan Leavitt discovered the period-luminosity law, which is the relationship between a star’s brightness and its distance.