Pull up a chair—sunset at the South Pole takes weeks, not hours. And why is that? Because the Earth’s rotational axis is tilted, the poles gradually proceed from full exposure to full shadow (and back again) as the Earth travels around the sun. The Earth’s tilt also gives us our seasons, and something less obvious—and maybe our new word of the day—the Characterizing the flavor ratio of cosmic neutrinos
December 18, 2025Upgrade Update #7
December 16, 2025Week 48 at the Pole
December 11, 2025Upgrade Update #6
December 8, 2025Prof. Francis Halzen honored with the 2026 APS Medal
December 8, 2025
![Characterizing the flavor ratio of cosmic neutrinos December 18, 2025Upgrade Update #7 December 16, 2025Week 48 at the Pole December 11, 2025Upgrade Update #6 December 8, 2025Prof. Francis Halzen honored with the 2026 APS Medal December 8, 2025](http://www.slate.com/blogs/bad_astronomy/2013/04/29/analemma_the_position_of_the_sun_in_the_sky_changing_over_a_year.html</p>
<p>‘ target=”_blank”>analemma</a>. Last week at the Pole, there was work as usual. And the astronomy and ham radio classes continued. But the sunset really took center stage.</p>
<figure class="wp-block-image size-large"><img width="750" height="500" decoding="async" src="https://res.cloudinary.com/icecube/images/w_750,h_500,c_scale/q_auto/v1608054953/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067.jpg?_i=AA" alt="ICL inbluehaze" class="wp-post-6387 wp-image-4451" data-public-id="news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067.jpg" data-format="jpg" data-transformations="q_auto" data-version="1608054953" data-seo="1" data-responsive="1" srcset="https://res.cloudinary.com/icecube/images/w_750,h_500,c_scale/q_auto/v1608054953/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067.jpg?_i=AA 750w, https://res.cloudinary.com/icecube/images/w_600,h_400,c_scale/q_auto/v1608054953/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067.jpg?_i=AA 600w, https://res.cloudinary.com/icecube/images/w_400,h_266,c_scale/q_auto/v1608054953/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067.jpg?_i=AA 400w, https://res.cloudinary.com/icecube/images/w_200,h_133,c_scale/q_auto/v1608054953/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067/news_attachment.file_.9f588d9833718d30.69636c626c756568617a655f445343313939392e6a7067.jpg?_i=AA 200w" sizes="(max-width: 750px) 100vw, 750px" /><figcaption>Martin Wolf, IceCube/NSF</figcaption></figure>
<figure class="wp-block-image size-large"><img width="750" height="318" decoding="async" src="https://res.cloudinary.com/icecube/images/w_750,h_318,c_scale/q_auto/v1608054952/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067.jpg?_i=AA" alt="SPT in sunset" class="wp-post-6387 wp-image-4452" data-public-id="news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067.jpg" data-format="jpg" data-transformations="q_auto" data-version="1608054952" data-seo="1" data-responsive="1" srcset="https://res.cloudinary.com/icecube/images/w_750,h_318,c_scale/q_auto/v1608054952/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067.jpg?_i=AA 750w, https://res.cloudinary.com/icecube/images/w_600,h_254,c_scale/q_auto/v1608054952/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067.jpg?_i=AA 600w, https://res.cloudinary.com/icecube/images/w_400,h_169,c_scale/q_auto/v1608054952/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067.jpg?_i=AA 400w, https://res.cloudinary.com/icecube/images/w_200,h_84,c_scale/q_auto/v1608054952/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067/news_attachment.file_.b8acf7d6c136e06b.73707473756e7365745f445343313933392e6a7067.jpg?_i=AA 200w" sizes="(max-width: 750px) 100vw, 750px" /><figcaption>Martin Wolf, IceCube/NSF</figcaption></figure>
<figure class="wp-block-image size-large"><img width="750" height="422" loading="lazy" decoding="async" src="https://res.cloudinary.com/icecube/images/w_750,h_422,c_scale/q_auto/v1608054951/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067.jpg?_i=AA" alt="station in sunset" class="wp-post-6387 wp-image-4453" data-public-id="news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067.jpg" data-format="jpg" data-transformations="q_auto" data-version="1608054951" data-seo="1" data-responsive="1" srcset="https://res.cloudinary.com/icecube/images/w_750,h_422,c_scale/q_auto/v1608054951/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067.jpg?_i=AA 750w, https://res.cloudinary.com/icecube/images/w_600,h_337,c_scale/q_auto/v1608054951/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067.jpg?_i=AA 600w, https://res.cloudinary.com/icecube/images/w_400,h_225,c_scale/q_auto/v1608054951/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067.jpg?_i=AA 400w, https://res.cloudinary.com/icecube/images/w_200,h_112,c_scale/q_auto/v1608054951/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067/news_attachment.file_.bc4bb2d09b7683cb.73746174696f6e73756e5f30343239352e6a7067.jpg?_i=AA 200w" sizes="(max-width: 750px) 100vw, 750px" /><figcaption>Martin Wolf, IceCube/NSF</figcaption></figure>
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