Monster ‘El Gordo’ galaxy cluster is bigger than thought

Astronomers have weighed the largest known galaxy cluster in the distant universe and found that it definitely lives up to its nickname: El Gordo (Spanish for “the fat one”). By precisely measuring how much the gravity from the cluster’s mass warps images of far-more-distant background galaxies, a team of astronomers has calculated the cluster’s mass to be as much as 3 million billion times the mass of our Sun. The Hubble data show that the cluster is roughly 43 percent more massive than earlier estimates based on X-ray and dynamical studies of the unusual cluster.

from Space & Time News — ScienceDaily http://ift.tt/1pZaBHs

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