Dragon V2 capsule from SpaceX is first entry in race to build successor to space shuttle
Dragon V2 craft is first US has built for manned space travel since end of shuttle programme, with its makers targeting a launch by 2017

A sleek white spacecraft that its makers hope will restore Americans' ability to send people into orbit has been unveiled by the private company SpaceX.
The capsule, called Dragon V2, is the first attempt at building a homegrown US spacecraft to carry astronauts since the space shuttle programme ended in 2011.
"It's all around, I think, really a big leap forward in technology. It really takes things to the next level," said SpaceX CEO Elon Musk at the unveiling ceremony on Thursday.
SpaceX is competing with other companies - including Boeing, Sierra Nevada and Blue Origin - to be the first commercial outfit to take astronauts to space by 2017 and maybe earlier.
"We actually expect to be able to transport crew by 2016, a year before Nasa (the US space agency) needs it," said Musk, a 42-year-old billionaire who is also head of the electric-car maker Tesla Motors. "We feel fairly confident we'll be ready."