Whirlpool galaxy(redirected from Messier 51)
Whirlpool galaxy(M51; NGC 5194) A well-defined type Sc spiral galaxy (see Hubble classification) that is face-on to us. It lies at a distance of 6 Mpc in the constellation Canes Venatici, the nearest bright star being Eta Ursae Majoris in the Plough. A small companion galaxy, NGC 5195, appears to be connected to it by an extension of one of the spiral arms. Total magnitude: 8.1.
Whirlpool galaxy[′wərl‚pül ‚gal·ik·sē]
A spiral galaxy of type Sc (open spiral structure), seen face on, in the constellation Canes Venatici.