tiny galaxy, nearly halfway across the universe
A tiny galaxy (lower right), nearly halfway across the universe, the smallest in size and mass known to exist at that distance.
Leonidas Moustakas of JPL and his international colleagues have used a trick of nature called gravitational lensing to make a detailed map of a tiny galaxy nearly halfway across the universe. The little galaxy, the smallest in size and mass measured that far away, can be seen at the center of the image as a ring around a bright dot. Why is the galaxy a ring? The dot in the center is actually a different galaxy in the foreground, whose gravity is bending the tiny galaxy's light into what's called an Einstein ring.

You can read the full release from the Univerity of California, Santa Barbara, at http://www.ia.ucsb.edu/pa/display.aspx?pkey=1660#description

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