Billionaires like Elon Musk and Jeff Bezos, as well companies like Boeing, believe a future where more satellites are put in orbit, alongside new space stations, as well as plans for bases on the moon, will prove very profitable.But it is not proving easy for Boeing in particular, following problems with its Starliner space craft on its maiden flight to the International Space Station.We hear from astrophysicists, companies that advise on space investment, and former astronaut Cady Coleman. Produced and presented by Russell Padmore(Image: Artist's concept of the Boeing Starliner craft travelling in Earth orbit. Credit: Boeing)

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