The Massive Stars in Westerlund 1

APOD 2017-06-22

Summary:

Star cluster Westerlund 1 is home to some of the largest and most massive stars known. Star cluster Westerlund 1 is home to some of the largest and most massive stars known.

Link:

https://apod.nasa.gov/apod/ap170620.html

From feeds:

Gudgeon and gist ยป APOD

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