| distance =6,500 ly<ref name=messier-objects>[http://www.messier-objects.com/messier-1-crab-nebula/ Messier 1: Crab Nebula] from messier-objects.com</ref> | | distance =6,500 ly<ref name=messier-objects>[http://www.messier-objects.com/messier-1-crab-nebula/ Messier 1: Crab Nebula] from messier-objects.com</ref> |