Bullet the bulldog skateboards in a seafront area in the city of Vladivostok, on Russia's Pacific coast on August 9, 2021. The 6-year-old dog learnt how to skateboard two years ago thanks to his owner, Sergei Shukshuyev. (Photo by Yuri Smityuk/TASS)

Policemen guard Poland's Supreme Court as a protester lies on the pavement in Warsaw, Poland, on Thursday, April 22, 2021. A disputed disciplinary body within Poland's Supreme Court is examining a motion that could result in the arrest of a judge who has become a symbol of the fight for an independent judiciary. (Photo by Czarek Sokolowski/AP Photo)

A man sits with his pet monkey, as they seek charity from passersby, along a road amidst rainfall during the monsoon season in Hyderabad, Pakistan on August 24, 2022. (Photo by Yasir Rajput/Reuters)

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

American actress Kelsey Asbille Chow attends The 2023 Met Gala Celebrating “Karl Lagerfeld: A Line Of Beauty” at The Metropolitan Museum of Art on May 01, 2023 in New York City. (Photo by Theo Wargo/Getty Images for Karl Lagerfeld)

An orange cat wears sunglasses and a jacket before taking part in an orange cat competition on July 02, 2023 in Bangkok, Thailand. Thailand's Cat Fanciers' Club hosted an orange cat competition during a Cat Expo at Bangkok's Central Westgate Mall. Over 70 cats were judged on fur color, health and friendliness. A one year old cat named Chuan Long, after the Chinese Kung Fu boxer, took home first prize. (Photo by Lauren DeCicca/Getty Images)

Canada's Jean-Simon Desgagnes competes in the men's 3000m steeplechase final of the Pan American Games Santiago 2023 at the National Stadium in Santiago, on November 4, 2023. (Photo by Martin Bernetti/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.