The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy approximately 2.5 million light-years from Earth and the nearest major galaxy to the Milky Way
Horsehead Nebula, also known as Barnard 33, is a dark nebula located in the constellation Orion. It sits within the emission nebula IC 434, which is illuminated by the nearby star Sigma Orionis. The distinctive shape of the Horsehead Nebula resembles that of a horse's head, hence its name.