"When I first spotted this system with a very high total mass on our galactic doorstep, I was immediately excited." ...

Leavitt discovered 2,400 variable stars, about half of the known total ... The brighter the star is overall, the longer the period of luminosity. Since the cepheids in the Magellanic Clouds ...

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 ...

However you pronounce it, its unexpected dimming draws even more attention to this red supergiant variable star in Orion ... a lot of headlines as its luminosity has shifted dramatically several ...

But looking at our own Sun, a G-type star on its main sequence fusing ... Well, if the only variable was the Sun's luminosity, we would expect Earth's climate to be pretty darn cold back in ...