Spacewalker Mark Vande Hei took his own photograph during the first spacewalk of 2018, on January 23, 2018. These sky-high pictures are better known as “space-selfies”. (Photo by Mark Vande Hei/NASA)

A Hawaiian cleaner wrasse provides its cleaning services to a yellowfin goatfish in a reef community off the Big Island in Hawaii. Cleaner species help rid their hosts of ectoparasites, dead tissue, bacteria and fungi. Studies have shown cleaning to play a vital role in keeping many reef ecosystems healthy. (Photo by Marty Snyderman/Caters News Agency)

A girl poses in antlers ahead of a curfew on pub in Nottingham, a city in central England’s Midlands region on September 21, 2020 as Freshers' Week got underway. Revellers were also pictured out in Birmingham, which was plunged into a local lockdown amid a surge in coronavirus cases. (Photo by Ashley Kirk/The Sun)

A police officer fires his tear gas launcher during a clash with student protesters in Surabaya, East Java, Indonesia, Thursday, October 8, 2020. Thousands of enraged students and workers staged rallies across Indonesia on Thursday in opposition to the new law they say will cripple labor rights and harm the environment. (Photo by Trisnadi/AP Photo)

Polish police in riot gear detain protesters, angry over new restrictions aimed at fighting the coronavirus pandemic, in Warsaw, Poland, Saturday, October 24, 2020. The protesters included entrepreneurs, far-right politicians, football fans and vaccine opponents. The clashes come amid rising social tensions and as new restrictions just short of a full lockdown took effect Saturday. (Photo by Czarek Sokolowski/AP Photo)

Traditional “Tantawawas” bread shaped like children sit on a grave as a Day of the Dead offering at the Villa Ingenio cemetery in El Alto, Bolivia, Monday, November 2, 2020. (Photo by Juan Karita/AP Photo)

A worker puts up an advertising billboard for a recruiting company, featuring what resembles US President Donald Trump, in Zagreb, Croatia, Saturday, November 7, 2020. (Photo by Darko Bandic/AP Photo)

Bride Ana Vallejos, wearing a traditional “Caporales” Andean outfit, is escorted by her parents to her wedding celebration, in La Paz, Bolivia, Saturday, December 12, 2020. As a measure to reactivate the economy, the Bolivian government lifted restrictions to help curve the spread of the new coronavirus. Sporting, religious and cultural events may take place publicly until mid-January. (Photo by Juan Karita/AP Photo)