A spiral galaxy is a type of galaxy originally described by Edwin Hubble in his
1936 work The Realm of the Nebulae and, as such, forms part of the Hubble ...
The most common type of galaxy is called a "spiral galaxy." Not surprisingly,
spiral galaxies look like spirals, with long arms winding toward a bright bulge at
Aug 15, 2013 ... A spiral galaxy has a distinct winding shape. Most of the galaxies observed by
astronomers are spiral galaxies.
Dec 16, 2011 ... Resembling festive lights on a holiday wreath, this NASA/ESA Hubble Space
Telescope image of the nearby spiral galaxy M74 is an iconic ...
Spiral galaxies get their name from the shape of their disks. In a spiral galaxy, the
stars, gas and dust are gathered in spiral arms that spread outward from the ...
May 6, 2016 ... Shown in this Hubble Space Telescope image, NGC 4394 is the archetypal
barred spiral galaxy, with bright spiral arms emerging from the ends ...
Spiral galaxies may remind you of a pinwheel. They are rotating disks of mostly
hydrogen gas, dust and stars. Through a telescope or binoculars, the bright ...
When Hubble developed his classification system for galaxies based on their
appearance in optical light, he divided the spirals into those in which the spiral
Before delving into an answer, it is important to note that the spiral arms of
galaxies are not fixed, solid objects; rather, they are patterns of bright stars and
Spirals are characterized by circular symmetry, a bright nucleus surrounded by a
thin outer disk, and a superimposed spiral structure. They are divided into two ...