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)

Princess Diana relaxes on the sand during a visit to the beach on the Caribbean Island of Nevis January 4, 1993. (Photo by Mark Cardwell/Reuters)

In this Saturday, December 30, 2017, picture a girl wearing a bear fur costume takes part in an annual bear parade in Comanesti, Romania. It's a tradition that originated in pre-Christian times, when dancers wearing colored costumes or animal furs went from house to house in villages, singing and dancing to ward off evil. (Photo by Vadim Ghirda/AP Photo)

American singer-songwriter, producer and former dancer Anastacia and teacher dancer Maykel Fonts perform during the “Dancing with the Stars” TV show in Rome, Italy on March 24, 2018. (Photo by PA Press Association)

Lebanese people take pictures for damaged grain silos in Beirut port following a huge explosion rocked the city in Beirut, Lebanon, 23 August 2020. According to Lebanese Health Ministry at least 181 people were killed, and more than 6,000 injured in the Beirut blast that devastated the port area on 04 August and believed to have been caused by an estimated 2,750 tons of ammonium nitrate stored in a warehouse. (Photo by Wael Hamzeh/EPA/EFE)

Devotees throw flower petals on an idol of the Hindu god Ganesh, the deity of prosperity, on the occasion of his birthday, celebrated as Magha Ganesh Jayanti, before immersing the idol into the Arabian sea, in Mumbai, India on February 16, 2021. (Photo by Francis Mascarenhas/Reuters)

A zoo keeper holds a month old striped Hyena cub called Hachi at the Bali zoo in Giayar, Bali Indonesia on Saturday, February 6, 2021. (Photo by Firdia Lisnawati/AP Photo)

Kim Kardashian is seen on February 15, 2017 in New York City. (Photo by Team GT/GC Images)