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Today in pictures: 16th July 2013

Today in pictures: 16th July 2013
A pair of giant panda twins born at Zoo Atlanta in America. Their mother Lun Lun surprised zoo officials because they had been excitedly anticipating the birth of just one cub.
Baby giant panda twins
Manchester United have bid £25m for Barcelona's ex-Arsenal midfielder Cesc Fabregas but the Gunners have first refusal on him at the same price. The offer is being considered but Fabregas has said he is open to returning to England.
Cesc Fabregas
An astronomer studying old images of Neptune and its moons has discovered a previously unknown moon. This is a NASA diagram showing the orbits of several moons located close to the planet Neptune. All of them were discovered in 1989 by NASA's Voyager 2 spacecraft, with the exception of S/2004 N 1 (circled). This takes Neptune's moon count to 14.
NASA image of Neptune and its moons.
I think we believe them when they tell us this is the world's toughest foot race - these guys are competing in the Badwater Ultramarathon in Death Valley National Park, California. The 135-mile (217 km) race goes from Death Valley to Mt. Whitney, and temperatures can reach 130 degrees Fahrenheit (55 Celsius).
Runners in Badwater Ultramarathon in Death Valley
A woman hugs Atletico Madrid's new player David Villa after his supporters invaded the field during his presentation at the Vicente Calderon stadium in Madrid. Atletico bought him from Barca for 5.1 million euros.
David Villa
A new baby giraffe has been born at Buenos Aires zoo. The calf who weighs 85 kg and measures 1.90m will receive a name after a poll among children visiting the zoo during next month.
Baby giraffe
It looks like a scene from a James Bond film but this is in fact Russian president Vladimir Putin, on board Sea Explorer 5 bathyscaphe off the island of Gogland in Russia. He was going deep under water to see the remains of the naval frigate Oleg, which sank in 1869.
Vladimir Putin in a round mini-submarine type sea-craft.