
Image caption
As colorful as any aurora, iridescent polar stratospheric clouds glitter in the low light of the spring sunrise at McMurdo Station in Antarctica in late August or early September 2003. Photo courtesy Seth White, UNAVCO.
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As colorful as any aurora, iridescent polar stratospheric clouds glitter in the low light of the spring sunrise at McMurdo Station in Antarctica in late August or early September 2003. Photo courtesy Seth White, UNAVCO.