Linked from
The 46 pages that link to Supernova remnant, each with the reason it gives.
SN 1987ANarrower topic: SN 1987A is evolving into a remnant as its ejecta strike the inner ring.
Crab NebulaNarrower topic: The Crab’s nebula is the observable remnant of the 1054 explosion.
Cassiopeia ANarrower topic: Cassiopeia A is a nearby, young example of this class of object.
Kepler's SupernovaNarrower topic: The visible nebula is the surviving debris of the 1604 explosion.
SN 1054Narrower topic: The Crab Nebula is the evolving remnant of the explosion.
SN 1572Narrower topic: The event’s surviving debris can be studied long after its light faded.
Cygnus LoopNarrower topic: The Cygnus Loop is a nearby, extended example of this class of object.