A bright glow on Saturn's B ring was captured by the Cassini spacecraft.
Saturn casts a shadow on its ring when Cassini camera took images of the planet lit by the Sun.
Thanks to the Atacama Large Millimeter/submillimeter Array (ALMA) telescope, astronomers were able to spot an "Einstein ring" in an ancient, far-away galaxy - and no, it's not the famed Ring of Sauron from The Lord of the Rings trilogy.
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