Slow down there!
This is rescue ship Electric Citizen. The space beyond contains potentially significant unmarked spoilers. Proceed at your own risk.
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The Carbon Anomaly is a unique, moonlet-like formation that can appear within the rings rarely.
This POI currently acts only as an astrogation point, and like moonlets cannot be destroyed. However, if scanned with a microseismic recon drone, it shows a carbon and calcium content, implying it has some biological formations, hence the skull-like features. The usage of the spooky music when nearby also further implies such.