Ruchaya Nillakan (L) and Nuttimon Sanyamast (C), same-sеx couple, attend their marriage registration event at Paragon shopping mall in Bangkok on January 23, 2025. A high-profile gay couple married in Thailand on January 23 as the kingdom's same-sеx marriage law went into effect, an AFP journalist saw, among the first of hundreds expected to do so. (Photo by Chanakarn Laosarakham/AFP Photo)

American actress Kristen Stewart attends the Chanel Metiers d'Art runway show, in Manchester, Britain on December 7, 2023. (Photo by Suzanne Plunkett/Reuters)

A Palestinian sits among the rubble of buildings destroyed during the Israeli offensive, amid a ceasefire between Israel and Hamas, in Rafah in the southern Gaza Strip on February 4, 2025. (Photo by Hatem Khaled/Reuters)

An Indian one-horned rhinoceros grazes on a dry wetland at the Pobitora Wildlife Sanctuary on the southern bank of the Brahmaputra River in Morigaon district of India's Assam state on April 4, 2025. (Photo by Biju Boro/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)

Workers demonstrate outside the factory of Hua Yang Printing Holdings Co Ltd on October 30, 2007 in Shenzhen of Guangdong Province, China. Over 1,000 workers of the company have blocked the 107 State Highway where the firm is located, to protest against their employer, who owed half a month's salary to the workers. (Photo by China Photos/Getty Images)

Miss Nord-Pas-de-Calais Camille Cerf (C) is congratulated by Miss Ile de France 2014 Margaux Savary (L) and Miss Auvergne 2014 Morgane Laporte after Cerf won the Miss France 2015 beauty contest on December 6, 2014 in Orleans. (Photo by Guillaume Souvant/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.