m22

This year's effort. Don't know if there's any improvement compared with... Well, maybe a little. A few more stars perhaps. This is a globular cluster as seen through a dense part of the milky way. Very old, globular clusters are of low metallic content. This is because there were few metals in the universe when the clusters formed from primordial matter not long after the universe formed. Metals are formed when a star explodes into a supernova at the end of its life. Its atoms of hydrogen fuse into heavier nuclei from which form metals. At the start of the universe then, there were few stars of supernova category. Phew. Quite pleased with that...

globular cluster m22 in sagittarius
700d on nt150s    29x4min @ ISO800