A new age of space exploration is dawning. But surprisingly, some of the boldest efforts at putting humans into space are now those of private companies started by a handful of maverick billionaire businessmen. In this film, Brian Cox gains exclusive access behind the scenes at Virgin Galactic, Blue Origin and Spaceport America, exploring what is really happening in privately financed space flight right now.
The 21st Century Race for Space broadcasts at 9pm on Tuesday 5th September on BBC Two. For more information about the series and iPlayer links please go to bbc.co.uk or keep exploring space below.