... The Keyhole Nebula . ... Abell 2218: A Galaxy Cluster Lens . ... Almost all of the bright objects in this Hubble Space Telescope image are galaxies in the cluster known as Abell 2218. The cluster is so massive and so compact that its gravity bends and focuses the light from galaxies that lie behind it. ... Destination: Moon . ... The Colorful Moon . ... Fractal Interstellar Dust Up Close . ... Many similar images of a Moon devoid of life are familiar to denizens of the space age. ... January . ...