What galaxy classification is Messier 64, known as the Black Eye Galaxy?
Answer
Sa spiral galaxy
Messier 64, also known by its popular nickname the Black Eye Galaxy, is officially classified within the Hubble sequence as an Sa spiral galaxy. This classification describes its general structure, indicating a spiral structure with relatively tightly wound arms originating from a prominent central bulge. The designation 'Sa' distinguishes it from other spiral types, such as Sb or Sc, which exhibit progressively looser spiral arms. This structure is visually apparent, although it is overshadowed by the distinctive dark lane of dust crossing its face, which secures its common nomenclature.
Related Questions
What galaxy classification is Messier 64, known as the Black Eye Galaxy?What dynamical feature is observed between the inner dusty area and outer regions of M64?In which constellation is Messier 64, the Black Eye Galaxy, located?What is the approximate apparent magnitude listed for Messier 64?What spectral shift is observed for Messier 64 due to its recessional velocity?Why is spectral redshift measurement more reliable than apparent brightness for M64's distance?Approximately how many light-years across does the Messier 64 structure span?What concept is confirmed by the redshift observed in Messier 64?If M64 showed a blueshift, what unlikely scenario would this imply about local gravitational forces?What physical process causes the stretching of light wavelengths when a source recedes?