Galaxy
A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas and dust, and an important but poorly understood component tentatively dubbed dark matter. The name is from the Greek root galaxias, literally meaning "milky", a reference to the Milky Way Galaxy.
Typical galaxies range from dwarfs with as few as ten million stars up to giants with a hundred trillion stars, all orbiting the galaxy's center of mass. Galaxies may contain many multiple star systems, star clusters, and various interstellar clouds. The Sun is one of the stars in the Milky Way galaxy; the Solar System includes the Earth and all the other objects that orbit the Sun.
Historically, galaxies have been categorized according to their apparent shape (usually referred to as their visual morphology). A common form is the elliptical galaxy, which has an ellipse-shaped light profile. Spiral galaxies are disk-shaped assemblages with dusty, curving arms. Galaxies with irregular or unusual shapes are known as irregular galaxies, and typically result from disruption by the gravitational pull of neighboring galaxies.
Source: en.wikipedia.org/wiki/Galaxy - 29.09.2010
Galaxies Detail
This detail of the left lower half of the first picture shows clearly, that a big part of the little points are really complete galaxies.
But it is much more inconceivable that the complete picture covers a very small part of the constellation Little Bear, only.
