related tags: 07090C 08090B 413C3C 44393A 5C575A 5E555A 8E6F70 B8B3BB B9AFBF astronomy c71 caldwell caldwell71 caldwellcatalog cosmic cosmos hubble hubblespacetelescope nasa ngc2477 nightsky opencluster openstarcluster space spacetelescope starcluster stargazing stars universe 867777