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Sagittarius Dwarf Galaxy

Sagittarius Dwarf Spheroidal Galaxy, Sgr dSph, Sgr DEG

One of a number of small galaxies known to be associated with the Milky Way spiral. The Sagittarius Dwarf Galaxy is roughly spheroid in shape, approximately 10,000 light years in diameter. It is unusual in that appears to be in to process of 'colliding' with our own Galaxy. This event is taking place at the base of the Outer Arm, on the other side of the Galaxy from our Sun.