Database Of Galaxies
NGC 4414 is a typical spiral galaxy in the constellation Coma Berenices, is about 55,000 light-years in diameter and approximately 60 million light-years from Earth.
A galaxy is described as "a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter".
Galaxies may contain anywhere from a few hundred million to one hundred trillion stars.
It's difficult for us to envisage the true scale of our cosmic environment. The number of galaxies has recently (2016) been revised to a new estimate of 2 trillion (2,000,000,000,000), with the number of stars contained therein being higher than the number of grains of sand on planet Earth.
Galaxies are typically from 3,000 to 300,000 light years in diameter and may be millions of light years away from each other.
Even at these vast distances, galaxies are gravitationally influenced by each other, and tend to be "clustered" into groups, clusters and superclusters, which are surrounded by voids that are even more vast.
Galaxies have been categorized in various databases, notably the NGC (New General Catalogue) which also contains other types of deep space objects besides galaxies.