interacting galaxy
individual galaxy whose gravitational field disturbs another galaxy
Whirlpool Galaxy
Extroplanet
Pinwheel Galaxy
spiral galaxy in the constellation Ursa Major
Antennae Galaxies
Interacting galaxies in the constellation Corvus
Mayall's Object
two colliding galaxies within the constellation of Ursa Major
Tadpole Galaxy
galaxy
Holmberg II
dwarf irregular galaxy in constellation Ursa Major
Mice Galaxies
two spiral galaxies in the constellation Coma Berenices
Leo Triplet
small group of galaxies