Hundreds of hardy swimmers across Britain braved jumping into freezing cold waters for a annual Christmas Day dip on December 25, 2017. (Photo by Dave Nelson/The Sun)

Members of South Korean K-Pop girl group Brave Girls pose on the red carpet at KCON Seoul 2022 in Seoul on May 7, 2022. (Photo by Anthony Wallace/AFP Photo)

American media personality and socialite Kylie Jenner (R) and her pal Yris Palmer brave the cold in a hot jacuzzi in the first decade of December 2022. (Photo by kyliejenner/Instagram)

A lake in a shape of a heart is seen surrounded by autumn-coloured trees outside Balashikha, Moscow region, Russia on October 4, 2021. (Photo by Maxim Shemetov/Reuters)

Staff prepare for Halloween at the Forbidden Corner tourist attraction, a labyrinth in the heart of Tupgill Park, in the Yorkshire Dales on October 19, 2022. (Photo by James Glossop/The Times)

The Elterwater quarry in Cumbria, North West England on June 12, 2023 which has now reached a water level that reveals a hidden heart shape in the stone. (Photo by Steven Lomas/Animal News Agency)

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)