Astrophotography - Gary Cook

Triangulum Galaxy, M33

The Triangulum galaxy, also known as M33, was officially discovered by Charles Messier in August 1764, although it is likely that the Italian astronomer Giovanni Battista Hodierna also observed the same galaxy in 1654. It’s a beautiful example of a spiral galaxy, smaller than our own galaxy, with an estimated 40 billion stars. The Triangulum galaxy is just over 3 million light years from us and has a diameter of about 60,000 light years. The light that formed this image left the galaxy shortly after human beings began to walk on two legs and has only just arrived. It’s a shocking reminder of how BIG the universe really is, and how insignificant we are on the cosmic scale.