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SlideshowReport

Gravitational Lensing of Quasars

Description
Gravitational Lensing of Quasars
Image from the Hubble Space Telescope that shows the gravitational lensing of a quasar in the constellation of Pegasus. The quasar, about 8 billion ly
from Earth, is seen as four separate images that surround a galaxy that is only 400 million ly away. This pattern is called an Einstein cross. The diffuse
image at the center of the Einstein cross is the core of the intervening galaxy. The physical effect that creates these multiple images is the same
as that seen for galaxies
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