NGC 678 is a spiral galaxy located in the constellation of Eridanus. It is approximately 200 million light-years away from Earth and is part of a larger group of galaxies. NGC 678 is notable for its well-defined spiral structure and bright central region, which contains a high concentration of stars. Discovered by the astronomer John Herschel in 1834, NGC 678 has a diameter of about 100,000 light-years. It is classified as a type Sc spiral galaxy, indicating a prominent central bulge and tightly wound spiral arms. Observations of NGC 678 contribute to our understanding of galaxy formation and evolution.