NGC 7007

NGC 7007 is a lenticular galaxy around 130 million light-years away from Earth in the constellation Indus. It was discovered by astronomer John Herschel on July 8, 1834.

Counter-rotating disk
In NGC 7007, there is counter-rotating disk of ionized gas that counter-rotates with respect to the stars. This indicates an external origin of the gas such as accretion.