ScienceDaily: Galaxies News

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• NASA's WISE findings poke hole in black hole 'doughnut' theory
• Very distant galaxy cluster confirmed
• A star cluster in the wake of Carina

NASA's WISE findings poke hole in black hole 'doughnut' theory Posted: 22 May 2014 01:23 PM PDT A survey of more than 170,000 supermassive black holes, using NASA's Wide-field Infrared Survey Explorer (WISE), has astronomers reexamining a decades-old theory about the varying appearances of these interstellar objects. The unified theory of active, supermassive black holes, first developed in the late 1970s, was created to explain why black holes, though similar in nature, can look completely different. Some appear to be shrouded in dust, while others are exposed and easy to see.

Very distant galaxy cluster confirmed Posted: 21 May 2014 10:37 AM PDT The structures and star populations of massive galaxies appear to change as they age, but much about how these galaxies formed and evolved remains mysterious. Many of the oldest and most massive galaxies reside in clusters, enormous structures where numerous galaxies are found concentrated together. Galaxy clusters in the early universe are thought to be key to understanding the lifecycles of old galaxies, but to date astronomers have located only a handful of these rare, distant structures.

A star cluster in the wake of Carina Posted: 21 May 2014 06:44 AM PDT This colorful new image from the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile shows the star cluster NGC 3590. These stars shine brightly in front of a dramatic landscape of dark patches of dust and richly hued clouds of glowing gas. This small stellar gathering gives astronomers clues about how these stars form and evolve — as well as giving hints about the structure of our galaxy's pinwheeling arms.

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