Amundsen-Scott South Pole Station experiences months of darkness. The sun dips below the horizon on March 21, after which follows several weeks of twilight before complete darkness results. Photo taken on June 25, 2009. (National Science Foundation/Jeremy Johnson)

A Soyuz rocket booster carrying the Progress MS-17 cargo freighter blasts off the Baikonur Cosmodrome in Kyzylorda Region, Kazakhstan on June 30, 2021. (Photo by Roscosmos Press Office/TASS)

McKensi Pascall is painted by artist Tom Sebazco at Human Connection Arts 8th Annual NYC Body Painting Day in Union Square Park on Sunday, July 25, 2021 in New York. (Photo by Brittainy Newman/AP Photo)

Freshmen take part in a military training at Chongqing City Vocational College on September 23, 2021 in Chongqing, China. (Photo by Chen Shichuan/VCG via Getty Images)

Director George Clooney reacts as he and his wife lawyer Amal Clooney arrive for a screening of the film “The Tender Bar” as part of the BFI London Film Festival, in London, Britain, October 10, 2021. (Photo by Henry Nicholls/Reuters)

A protester is covered in red paint during a demonstration against the government of Thailand's Prime Minister Prayut Chan-O-Cha and in support of the release of political prisoners outside Bangkok Remand Prison in Bangkok on October 13, 2021. (Photo by Lillian Suwanrumpha/AFP Photo)

The Radio City Rockettes perform during a rehearsal for their Christmas show in New York City, on October 13, 2021. The 2021 production will run from November 5, 2021, to January 2, 2022, at Radio City Music Hall. (Photo by Timothy A. Clary/AFP Photo)

A woman wearing in face mask to curb the spread of COVID-19 passes street's cafe in Kyiv, Ukraine, Friday, October 22, 2021. Coronavirus infections and deaths in Ukraine have surged to all-time highs amid a laggard pace of vaccination, which is one of the lowest in Europe. (Photo by Efrem Lukatsky/AP Photo)