M74: A Grand Design Spiral Galaxy
M74 is about the same size as our own Milky Way Galaxy. Like our
Milky Way,
M74 is classified
a spiral galaxy. M74's sweeping lanes of
stars and
dust combined with its
small nucleus make it a classic
Grand
Design Spiral. On the
Hubble Sequence of Galaxies, M74 is listed as "Sc".
In the
above picture, visible light is shown in red and
ultraviolet light
superposed in blue. In general, older stars are more red and younger
stars are blue.
Studies with the Ultraviolet Imaging Telescope show that the disk of M74 has undergone significant star formation in just
the past 500 million years.