Sunisa Lee competes on the beam during the U.S. Gymnastics Championships, Sunday, June 2, 2024, in Fort Worth, Texas. (Photo by Julio Cortez/AP Photo)

Belarus' Aryna Sabalenka in action against Karolina Muchova at Roland Garros Grand Slam Tournament – Day 12 on June 08, 2023 in Paris, France. (Photo by Lisi Niesner/Reuters)

Spot the baton: the Dutch athlete Femke Bol falls to the ground as Alexis Holmes of the US runs to victory in the mixed 4x400m relay final at the World Athletics Championships in Budapest, Hungary on August 19, 2023. (Photo by Márton Mónus/Reuters)

A young girl pulls on her braids during the Red Head Days festival in Tilburg, Netherlands, Saturday, August 30, 2025. (Photo by Virginia Mayo/AP Photo)

A man dressed as Father Frost, Russian equivalent of Santa Claus, sits by the fire with a reindeer Yakut, marking winter solstice at the Royev Ruchey Park of Flora and Fauna in the Siberian Taiga wood in the suburbs of Krasnoyarsk, Russia, December 21, 2016. (Photo by Ilya Naymushin/Reuters)

Two women jump into a frozen pond as they compete in the Polar Plunge at Frozen Dead Guy Days in Nederland, Colorado March 14, 2015. The winter festival in the small mountain town commemorates the 1994 discovery of the corpse of Bredo Morstol, which is now housed in a shed on dry ice above the town. (Photo by Rick Wilking/Reuters)

A woman with a sign that reads in Portuguese “Being woman without Temer”, stands next to a police barricade during a protest against the gang rape of a 16-year-old girl in Sao Paulo, Brazil, Wednesday, June 1, 2016. In response to the assault, Brazil's interim President Michel Temer said that the country will set up a specialized group to fight violence against women. (Photo by Andre Penner/AP Photo)

The Royal Observatory just announced its Astronomy Photographer Of The Year 2013 winners. Australian photographer Mark Gee was chosen among a thousand amateur and professional photographers around the globe to win the top title. His work is part of an exhibition of the winning photographers, which opened on Sept. 19 at the Royal Observatory Greenwich. The Royal Observatory shared with us the winners and notable mentions of the competition. Their descriptions of the prizewinners can be found below the images.