In celebration of Halloween, Hubble brings you this inky image of the galaxy cluster Abell 611, located over 1000 megaparsecs, or roughly 3.2 billion light years, from Earth. Like all galaxy clusters, the continued existence of Abell 611 poses a mystery to astronomers.
Click here for original story, Hubble celebrates the spooky season with Abell 611, a cobweb of galaxies held together by a dark secret
Source: Phys.org