ScienceDaily: Galaxies News |
| Failed dwarf galaxy survives galactic collision thanks to full dark-matter jacket Posted: 23 May 2014 11:51 AM PDT 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. Astronomers believe that 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. |
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