This is the globular cluster NGC 1850; it is located about 163,000 light-years away in the Large Magellanic Cloud in the constellation Dorado. The object itself is interesting and peculiar in a few different ways...


Firstly, it's surrounded by nebula-like material that kind of resemble Star Trek shields in some images. Many astronomers believe this material was generated during supernova events throughout the cluster’s history.


Secondly, the cluster is actually two clusters. You have the main globular cluster; the large, sprawling structure that probably first grabbed your attention when you first gazed upon the image. Tucked away near the bottom corner is a second, much smaller cluster of stars. The smaller cluster is part of the main cluster (meaning the smaller structure is gravitationally bound with the larger structure instead of being in the fore/background) and is composed of both massive, hot blue stars and smaller, cooler red stars. This kind of diversity gives scientists an opportunity to study the various different aspects of star-formation.

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