sentences:  Once thought to be part of the Local Group, they are now known to belong to their own group- the IC 342/Maffei Group.This complex is the eastern neighbor of IC1805 (Heart Nebula) and the two are often mentioned together as the "Heart and Soul".W5, a radio source within the nebula, spans an area of sky equivalent to four full moons and is about 6,500 light-years away in the constellation Cassiopeia.