Assertion: carina | /r/CapableOf | see supernova activity
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text: so its environment has not been altered by such explosions, however, an Infrared Space Observatory study found a broad emission feature at 22 μm reminiscent of newly-made dust seen in the Cas A supernova remnant (Chan & Onaka 2000 ), implying that Carina has also seen supernova activity.