A kite is flown at a park during the ancient annual public picnic day, called Sizdeh Bedar, on the 13th and last day of Nowruz, the Iranian New Year holiday, in Tehran, Iran, Wednesday, April 2, 2025. (Photo by Vahid Salemi/AP Photo)

Chinese female troops march during a military parade marking the 80th anniversary of victory over Japan and the end of World War II, in Beijing's Tiananmen Square on September 3, 2025. (Photo by Pedro Pardo/AFP Photo)

The British alternative rock duo Nova Twins perform on day three of the 2024 Shaky Knees music festival in Atlanta, US on May 5, 2024. (Photo by John D. Shearer/Rex Features/Shutterstock)

Monae' Nichols of the United States competes in the preliminary round of the long jump competition during ATHLOS NYC25 on October 09, 2025 at Times Square in New York City. (Photo by Emilee Chinn/Athlos/Getty Images)

A protester blows bubbles at police during protests at the Land Forces 2024 arms fair in Melbourne on September 12, 2024. (Photo by William West/AFP Photo)

A workman smooths out the gravel near the base of British artist Alex Chinneck' latest sculpture “A bullet from a shooting star” on the Greenwich Peninsula in London on September 17, 2015. The 35-metre tall, upside-down electricity pylon overlooks the Canary Wharf financial district. (Photo by Leon Neal/AFP 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.

A man from Dinka tribe holds his AK-47 rifle in front of cows in a Dinka cattle herders camp near Rumbek, capital of the Lakes State in central South Sudan December 14, 2013. (Photo by Goran Tomasevic/Reuters)