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News From the Field

Failed dwarf galaxy survives galactic collision thanks to full dark-matter jacket


May 23, 2014

a false-color image of the Smith Cloud Like a bullet wrapped in a full metal jacket, a high-velocity hydrogen cloud hurtling toward the Milky Way appears to be encased in a shell of dark matter, according to a new analysis of data from the Robert C. Byrd Green Bank Telescope. Astronomers believe without this protective shell, the high-velocity cloud, known as the Smith Cloud, would have disintegrated long ago when it first collided with the disk of our galaxy. Full Story

Source
National Radio Astronomy Observatory

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