fyeahastropics: NGC 6357: Cathedral to Massive Stars(via APOD; Image Credit: NASA, ESA and Jesús Maíz Apellániz (IAA, Spain); Acknowledgement: Davide De Martin (ESA/Hubble) ) How massive can a normal star be? Estimates made from distance,
tags: ciel62,
from: https://ciel62.tumblr.com/post/141822353421
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