Alex Cunningham

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Oh Be A Fine Girl, Kiss Me

” Spectral types were recognized as a sequence of surface Temperature by Cecilia Payne-Gaposhkin ”

cwnl:

NGC 4755: A Jewel Box of Stars

The great variety of star colors in this open cluster underlies its name: The Jewel Box. One of the bright central stars is a red supergiant, in contrast to the many blue stars that surround it. The cluster, also known as Kappa Crucis contains just over 100 stars, and is about 10 million years old.

Credit & Copyright: Dieter Willasch (Astro-Cabinet)

sayitwithscience:

The H-R Diagram

  • named after Danish and American astronomers Ejnar Hertzsprung and Henry Russel
  • a graphical representation of the relationship between the luminosity, surface temperature, and radius of stars
  • it is known to be the most important diagram in astronomy as it shows the state of a star throughout its life

(via ikenbot)