A dog walks on the street as it snows in Kyoto on January 25, 2024. (Photo by Philip Fong/AFP Photo)

People kiss before the start of the Carmelitas street party on the first day of Carnival in Rio de Janeiro, Brazil, Friday, February 9, 2024. (Photo by Bruna Prado/AP Photo)

A captive elephant is made to swim for visitors at Khao Kheow Open Zoo in Chonburi province, Thailand on September 15, 2024. (Photo by Lillian Suwanrumpha/AFP Photo)

Students participate in a commemorative march near the Arch of Triumph in Pyongyang on April 25, 2025, to mark the 93rd anniversary of the Korean People's Revolutionary Army. (Photo by Kim Won Jin/AFP Photo)

A man presents a self-made robot that local media reported is able to carry a person, in Heihe, Heilongjiang province, China, April 5, 2017. (Photo by Reuters/China Daily)

Apple CEO Tim Cook discusses the new iPhone 6 and iPhone 6 plus on Tuesday, September 9, 2014, in Cupertino, Calif. The iPhone 6 will have a screen measuring 4.7 inches, while the iPhone 6 Plus will be 5.5 inches. (Photo by Marcio Jose Sanchez/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 Guard of Honor of the Presidential Regiment from Russia perform during the “Spasskaya Tower” international military music festival at Moscow's Red Square, Russia, September 10, 2015. The festival runs until 13 Sepember. (Photo by Maxim Shemetov/Reuters)