This Hubble Space Telescope image is the deepest ever made image of any cluster of galaxies. It shows some of the faintest and youngest galaxies ever detected. Abell 2744, in the constellation Sculptor, contains several hundred galaxies as they looked 3.5 billion years agoREUTERS/NASA/ESASolar array panels on the Russian segment of the International Space Station are photographed by an Expedition 38 crew member while the crew watches for the arrival of the ISS Progress 54 cargo spacecraftReuters/NASAWater surrounds flooded properties in the village of Moorland on the Somerset LevelsGettyA spotted seal swims in a frozen pond after workers broke the ice at a zoo in Yantai, Shandong Province, ChinaGettyA tiger clutches a stack of bamboo in the snow at a zoo in Hangzhou, Zhejiang province, ChinaReutersRachelle Arthey examines a confiscated elephant tusk ahead of today's crisis talks at London Zoo on illegal wildlife trade. In 2013 more than 25,000 African elephants were killed by poaching gangs, and experts fear that they will soon become extinct unless urgent action is taken.Johnny Green / London ZooBill Harrington sits with his Old English Sheepdog named Swagger during the 138th annual Westminster Dog Show at Madison Square Garden in New YorkGettyJordan, a Yorkshire Terrier, is prepared backstage during the Westminster Kennel Club dog show in New YorkAPEthnic Miao women in traditional costume take part in the annual Tiaohua festival in Suoga village, Guizhou province, ChinaReutersBritain's Katie Summerhayes reacts at the finish line during the women's freestyle skiing slopestyle qualification event at the 2014 Sochi Winter Olympic GamesReutersThe helmets of eighteen competitors are seen during the men and women skeleton event training at the Sanki sliding centre in Rosa Khutor, a venue for the 2014 Sochi Winter OlympicsReutersFrance's Benjamin Cavet performs a jump during the men's freestyle skiing moguls qualification round at the 2014 Sochi Winter OlympicsReutersAustralia's Dale Begg-Smith crashes during the men's freestyle skiing moguls qualification round at the 2014 Sochi Winter OlympicsReutersSjinkie Knegt of Netherlands and Se Young Park of South Korea crash during the Short Track Men's 1500m Final B at the Sochi 2014 Winter OlympicsGettyA visitor views artist Phlegm's art installation "The Bestiary" at the Howard Griffin Gallery in Shoreditch, London. The artworks are not for sale, and their creator plans to destroy them when the show is overReutersAn artist decorates the shield of an anti-government protester in Kiev, UkraineReutersNorth Korean leader Kim Jong-un poses for a photo with participants of a national agriculture competitionReutersAcademy Award nominees attend the 86th Academy Awards nominee luncheon at The Beverly Hilton HotelGetty