This is cool. When two galaxies are in a direct line with us, the gravity of the closer one bends the light from the further one around the near galaxy as a ring. Now they've found a double Einstein Ring, three galaxies in a direct line to us. [
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An Einstein Ring happens when two galaxies are perfectly aligned. The closer galaxy acts as a lens, magnifying and distorting the view of a more distant galaxy. But today astronomers announced that they've discovered a double Einstein Ring: three galaxies are perfectly aligned, creating a double ring around the lensing galaxy. The odds of finding something like this are pretty low. And yet… here it is.
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