... Split into two sides, it straddles a special circle of latitude on planet Earth, near 23.5 degrees north, known as the Tropic of Cancer. Moon Over Andromeda . ... The Great Spiral Galaxy in Andromeda (aka M31), a mere 2.5 million light-years distant, is the closest large spiral to our own Milky Way. ... The Eskimo Nebula from Hubble and Chandra . ... Hoags Object: A Strange Ring Galaxy . ... Also known as M20, it lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. ...