NGC 3628 is a spiral galaxy located approximately 35 million light-years away in the constellation Leo. It is part of the Leo Triplet, a group of three interacting galaxies that also includes NGC 3627 and NGC 3623. NGC 3628 is notable for its edge-on appearance, which makes it look like a thin line in the sky. This galaxy has a diameter of about 100,000 light-years and is characterized by a prominent dust lane that runs along its center. NGC 3628 is also known for its active star formation, which is influenced by gravitational interactions with its neighboring galaxies in the Leo Triplet.