NGC 5194 - Whirlpool Galaxy (M51) is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus in the constellation Canes Venatici. It was the first galaxy to be classified as a spiral galaxy.
A composite image of M51, called the Whirlpool Galaxy, 30 million light years from Earth and 60 thousand light years across. The original images were taken with a telescope at Kitt Peak National Observatory, and the Hubble Space Telescope. (Photo: NASA via The Telegraph)