Wiktionary
n. (cepheid variable English)
Usage examples of "cepheid variables".
In 1956, astronomers discovered that Cepheid variables were more variable than they had thought.
I'm going to try and observe known Cepheid variables, take observations over a period of time, and if I can find as many as three that I can absolutely identify, I can compute where we are in relation to the central drift of the Galaxy.
For some stars, like Cepheid variables, the wobble occurs naturally.
About Henrietta Leavitt, the nineteenth-century Boston spinster who spent seventeen years studying Cepheid variables and found the first good way of measuring the size of the universe.
Some stars pulsed, like the Cepheid variables, but in an orderly way.
It was by studying the stars in the Small Magellanic Cloud, all more or less at the same distance from us, that the American astronomer Henrietta Swann Levitt (1868-1921) first noted the connection between the luminosity of Cepheid variables and their periods.