Explanation: Humanity's understanding of the relative brightness and variability of stars was revolutionized by the work of Henrietta Swan Leavitt (1868-1921). Working at Harvard College Observatory, Leavitt precisely calibrated the photographic magnitudes of 47 stars to which all other stars could be compared. Leavitt discovered and cataloged over 1500 variable stars in the nearby Magellanic Clouds. From this catalog, Leavitt discovered that brighter Cepheid variable stars take longer to vary, a fact used today to calibrate the distance scale of our universe.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: personalii - scientist - Henreitta Leavitt - Genrietta Levitt - star Publikacii so slovami: personalii - scientist - Henreitta Leavitt - Genrietta Levitt - star
Sm. takzhe: Chernaya dyra razrushaet zvezdu: animaciya K 100-letiyu E.B. Kostyakovoi «Kak bezzakonnaya kometa…» 25 samyh yarkih zvezd na nochnom nebe 2MASS J17554042+6551277 Ushel iz zhizni Shiv'ev Valerii Ivanovich, pedagog, mnogoletnii avtor Astroneta Animaciya: chernaya dyra razrushaet zvezdu Vse publikacii na tu zhe temu >>