The Helix Nebula (also known as NGC 7293) is a planetary nebula (PN) about 650 light-years away in the constellation Aquarius. It is one of the closest planetary nebulae to Earth an was discovered by Karl Ludwig Harding before 1824. It has a very similar appearance to the Ring Nebula. It is also similar in size, age, and physical characteristics to the Dumbbell Nebula, with the significant difference in appearance being a consequence of the relative proximity and more nearly equatorial viewing angle of the Dumbbell. The Helix has often been referred to as the Eye of God on the Internet, since about 2003. The Helix Nebula was also featured in the 2004 Battlestar Galactica TV series.