spaceplasma: Cepheid Variables are very luminous stars, 500 to 300,000 times greater than the Sun, with short periods of change that range from 1 to 100 days. They are pulsating variables that expand and shrink dramatically within a short period of
spaceplasma: Cepheid Variables are very luminous stars, 500 to 300,000 times greater than the Sun, with short periods of change that range from 1 to 100 days. They are pulsating variables that expand and shrink dramatically within a short period of
![Beam-Meh-Up-Scotty: Anomaly1: 4Gifs: Dog Is Better At Yoga. [Video] That Was](https://64.media.tumblr.com/21aae042a4d040e72deb150278cb0215/tumblr_msoao6tqnN1qdlh1io1_250.gif)
