The brighter the star is overall, the longer the period of luminosity. Since the cepheids in the Magellanic Clouds were all about the same distance from Earth, Leavitt concluded that the period ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

Leavitt's work with variable stars led to her most important contribution to the field: the cepheid variable period-luminosity relationship. By intense observation of a certain class of variable ...

Trump White House press secretary Karoline Leavitt earns praise from conservatives on social media regarding her first ...

This was dubbed the "period-luminosity relationship." Other astronomers realized the significance of Leavitt's work: the relationship could be used to work out distances to stars. While a student ...

Karoline Leavitt is the new White House press secretary under Donald Trump. Her appointment is a historic first. Here's what ...

"Karoline Leavitt is a rock star," actor James Woods posted on X. "These next four years are going to be sublime." Individuals Receiving Direct Assistance Won't Be Impacted By Federal Funding Freeze, ...