A tern chick takes its first steps in the first decade of June 2024 at Nickerson Beach, New York, a common nesting location. (Photo by Suraj Ramamurthy/Solent News)

Nora White, 6, dumps a cup of water on her sister Kennedy White, 3, at Barnett Field Splash Pad in Edmond, Okla., on Tuesday, June 25, 2024.(Photo by Bryan Terry/The Oklahoman via USA TODAY Network)

A boy dives into the water during training in Kyiv's Liko Diving School, July 3, 2024. According to Ukraine's first lady, more than 2 million children have fled the country. The departures have impacted various sports. (Photo by Alex Babenko/AP Photo)

Revelers enter the cold water during the annual Polar Bear Plunge on New Year's Day, Wednesday, January 1, 2025, in New York. (Photo by Andres Kudacki/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.

Members of the Albert Battery perform a gun salute during the Anzac Day dawn service held by the Currumbin RSL on the Gold Coast in Currumbin, Australia, 25 April 2016. The Anzac day marks the landing of the Australian and New Zealand Army Corps (Anzac) troops at Gallipoli in what is today Turkey during WWI. World War One, also called the Great War, according to official statistics cost more than 37 million military and civilian casualties between 1914 and 1918. (Photo by Glenn Hunt/EPA)

Tommy Lindsey holds an enormous maple leaf that he found in Mount Vernon, Wash., October 28, 2013. Lindsey was walking with his family when he picked up the leaf that is more than two feet from stem to tip and more than 21 inches wide. (Photo by Frank Varga/The Skagit Valley Herald)

People fight for the ball as they take part in a mud football match during a festival for celebrating harvest in a village in Jinhua, Zhejiang Province, China September 24, 2017. (Photo by Reuters/China Stringer Network)