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 ...

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." "Well @karolineleavitt is certainly up for the job," Fox News contributor Joey ...

Karoline Leavitt performance was widely praised, as she answered questions from reporters without relying heavily on scripted ...

"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, ...