A demonstrator catches fire during clashes with riot police within a protest against Venezuelan President Nicolas Maduro, in Caracas on May 3, 2017. Venezuela's angry opposition rallied Wednesday vowing huge street protests against President Nicolas Maduro's plan to rewrite the constitution and accusing him of dodging elections to cling to power despite deadly unrest. (Photo by Ronaldo Schemidt/AFP Photo)

People wearing face masks to prevent the spread of coronavirus gather in a discotheque in Madrid, Spain, early Saturday, July 25, 2020. Nightlife is becoming the new target of Spanish authorities attempting to contain a spike in coronavirus infections since the country ended a lockdown. The Catalonia regional government has shut nightlife venues in Barcelona, and on Friday officials in Madrid said they were considering a similar step. (Photo by Manu Fernandez/AP Photo)

Western lowland gorilla Kijivu holds her newborn baby at the Prague Zoo in the Czech Republic. (Photo by Isifa/Getty Images)

Gorgeous galaxies and stunning stars make up this selection of pictures from the shortlisted entries for this year’s Insight Astronomy Photographer of the Year award. The winners will be announced on 15 September, and an exhibition of the winning images will be will be displayed in a free exhibition at the Royal Observatory Greenwich’s Astronomy Centre from 17 September. Here: “Seven Magic Points”. The rusty red swirls of the circular, iron sculpture Seven Magic Points in Brattebergan, Norway mirror the rippling aurora above. (Photo by Rune Engebø/Royal Observatory Greenwich’s Astronomy Photographer of the Year 2016/National Maritime Museum)

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)

A restaurant worker wearing a mask cleans the windows as the restaurant reopens amid the COVID-19 pandemic in Sao Paulo, Brazil, Monday, July 6, 2020. Bars, restaurants and beauty salons were allowed to re-open Monday after over three months of quarantine, and are required to observe preventative measures and reduced operating hours only during the day. (Photo by Andre Penner/AP Photo)

Cao Ri and Xu Jiaqian have a wedding photograph taken in a pool at the Qianyishi Underwater Photography Studio in Beijing, China on September 7, 2017. (Photo by Thomas Peter/Reuters)