The Tidal Tail of NGC 3628 . ... Credit Copyright: Thomas V. Davis ( tvdavisastropix.com ) Explanation: A mere 30 million light-years away, large spiral galaxy NGC 3628 (center left) shares its neighborhood in the local Universe with two other large spirals , in a magnificent grouping otherwise known as the Leo Triplet . ... But, perhaps most intriguing is the spectacular tail stretching up and to the left for about 300,000 light-years from NGC 3628's warped, edge-on disk. ...