Quirky lunar swirls expose the moon's secret past

Lunar observers have long noted mysterious “swirls,” patterns of alternating bright and dark shading, adorning the lunar surface. The popular Reiner Gamma formation — first described by Renaissance astronomers and now beloved by backyard astronomy enthusiasts — is one such lunar swirl.

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Rachel Crowell

Crowell, a former AAAS Mass Media Fellow who holds a bachelor's in mathematics and statistics, is a freelance math and science writer based in the Midwest. Follow Crowell on Twitter at @writesRCrowell.

Friday, January 25, 2019 - 06:00