Week 13 at the Pole

ICLpretty
Martin Wolf, IceCube/NSF

The sun has set, they’ve held their traditional sunset dinner, and yet … it’s still light outside. Well, that’s twilight. Even after the sun falls below the horizon, the scattering of light in the upper atmosphere illuminates the lower atmosphere and the Earth’s surface. At the South Pole, the initial period of twilight—or

Week 23 at the Pole
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  • Week 21 at the Pole
  • Week 20 at the Pole