The competition, which is run by the Royal Observatory Greenwich in association with BBC Sky at Night Magazine, is now in its sixth year and has received over 2,500 entries. Photo: Centre of the Heart Nebula by Ivan Eder (Hungary). Situated 7500 light years away in the “W”-shaped constellation of Cassiopeia, the Heart Nebula is a vast region of glowing gas, energized by a cluster of young stars at its centre. The image depicts the central region, where dust clouds are being eroded and moulded into rugged shapes by the searing cosmic radiation. (Photo by Ivan Eder)

A boy collects drinking water from a hand pump in Kutubdia, Bangladesh on March 30, 2016. Kutubdia is one of many islands affected by some of the fastest recorded sea-level rises in the world. The island has halved in size in 20 years. (Photo by SIipa/Rex Features/Shutterstock)

New York's famed Empire State Building hosted new guests on Saturday night as images of endangered animals were flashed across its facade.

A Germany fan looks dejected after the FIFA World Cup Qatar 2022 Group E match between Costa Rica and Germany at Al Bayt Stadium on December 1, 2022 in Al Khor, Qatar. (Photo by Wolfgang Rattay/Reuters)

A girl holds her hedgehog to be blessed by a priest at the Cathedral San Bernardino de Siena during the ceremony commemorating the Feast of San Antonio Abad, the patron saint of domestic animals, in Xochimilco on the outskirts of Mexico City, Mexico on January 17, 2024. (Photo by Raquel Cunha/Reuters)

A starling jealously guards a seed station in the back garden of the photographer’s Michigan home in January 2024. (Photo by Lisa Cavanary/Solent News)

An Afghan man cleans the his courtyard partially submerged in flood water following the flash floods after heavy rainfall in Guzara district of Herat province on March 13, 2024. (Photo by Mohsen Karimi/AFP Photo)

Models prepare backstage before a creation from the Saint Joy by Bian Huizhong during the China Fashion Week in Beijing on March 30, 2023. (Photo by Wang Zhao/AFP Photo)