Gravity Lenses are Super

A US and Netherlands-led team of astronomers using the Hubble Space Telescope have identified 19 new examples of gravitationally lensed galaxies.

Among the new examples are eight so-called Einstein Rings, a rare phenomenon where an image of a hidden galaxy is stretched in a complete circle around the lensing object. Only three examples of visible-light Einstein rings were previously known.
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Gravitational lensing takes place when a sufficiently massive object lies between the Earth and a light source, like a distant galaxy. The gravity of the intermediate object is strong enough that it will bend light from the object it obscures around itself, so that it is visible from Earth.

This takes the form of an arc, or of multiple images of the otherwise hidden object aro

Check out some pictures here.