Though it's nearly 1500 light years from Earth, the Horsehead Nebula does look like a horse's head peaking from the dark clouds when viewed from our home planet. The horse head is so promenent because the dust it consists of is so thick it blocks the starlight behind it. Scottish-American astronomer Williamina Fleming was the first to discover this beautiful nebula in the Orion constellation. Thanks, Williamina, for giving us a peek into the mysteries of our spledid universe.
