Assertion: supernova's galaxy | /r/HasProperty | messier
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Source sentences:
text: Another bright recent supernova, observable from the Northern Hemisphere, was SN 1993J in the galaxy Messier 81 (M81).
text: In fact, observations in 2011 of SN2011fe, another Type Ia supernova discovered in the nearby galaxy Messier 101 by PTF (the precursor to the iPTF), appeared to rule out the single-degenerate model for that particular supernova.