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 girl wearing a Santa hat surfs at Bondi Beach on December 25, 2019 in Sydney, Australia. December is one of the hottest months of the year across Australia, with Christmas Day traditionally involving a trip to the beach and celebrations outdoors. (Photo by Mark Evans/Getty Images)

Yeshiva School students briefly dance on Grant Street after the menorah lighting outside of the City-County Building for the fifth night of Hanukkah, Thursday, December 26, 2019, in downtown Pittsburgh. (Photo by Alexandra Wimley/Pittsburgh Post-Gazette via AP Photo)

Freshers partied on the streets as they headed to clubs on September 23, 2021 in Leeds, United Kingdom. Crowds of freshers headed out with their new pals to party until the early hours as Freshers Week continues across the country. (Photo by Nb press ltd)

A protester scuffles with a member of Israeli security forces during a demonstration in the east Jerusalem neighbourhood of Sheikh Jarrah, on December 17, 2021. (Photo by Ahmad Gharabli/AFP Photo)

Miss Alaska Emma Broyles, center, reacts after being crowned Miss America at Mohegan Sun, Thursday, December 16, 2021, in Uncasville, Conn. (Photo by Jessica Hill/AP Photo)

Boxers Deontay Wilder, left, and Tyson Fury exchange words as they face each other at a news conference in Los Angeles, Wednesday, November 28, 2018. The pair are slated to fight Saturday night for Wilder's WBC heavyweight title. (Photo by Andrew Couldridge/Action Images via Reuters)

Participants gather during a traditional hunting contest, involving tamed golden eagles and hawks, in Almaty, Kazakhstan on December 1, 2018. (Photo by Pavel Mikheyev/Reuters)