Around 11,000 years ago, a supernova exploded in the constellation of Vela. The explosion was so bright that our ancestors could see it in the daytime sky. The outer layers of the exploding star collided with the interstellar medium and triggered a shock wave that is still visible today as blue and red filaments. The larger red, more cloud-like nebular structures show a small section of the remnants of another massive supernova explosion about 1 million years ago. They are part of the huge Gum Nebula complex, which is the largest nebula in the night sky with an apparent diameter of 40° (our moon would fit inside about 5000 times). This photo has an image section of about 13°x9°, our moon would fit into this image about 470 times. The photo was taken in co-operation with Andy Bender and Nico Gärtner in Rooisand, Namibia.