Catalog of massive stars: Only one on two million qualify

Only one in two million stars in our galactic environment is of type O, a category that includes stars with anywhere between sixteen and more than one hundred solar masses, and luminosities millions of times greater than that of the sun. Such stars end their lives in supernovae and have a decisive influence on the structure and evolution of galaxies.

from Space & Time News — ScienceDaily http://ift.tt/1n16z3b

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