Skywatch

  • February 24, 2011

    Episode 321: Galaxy X

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    You've heard of Planet X -- the idea, popular with science fiction enthusiasts and conspiracy addicts, that there might be an undetected planet out there in our solar system. But how about Galaxy X? Astronomers using numerical models predict the presence of a dwarf galaxy 600,000 light years from the center of the Milky Way. The galaxy may be too faint to see in visible light ? but observers with infrared and radio telescopes could find it.