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SpaceShipTwo Crash: Astronauts And Entrepreneurs Offer Condolences

31/10/2014 20:57 GMT | Updated 31/10/2014 21:59 GMT

Astronauts, officials and members of the private space community have offered their condolences to the families of two Virgin Galactic test pilots after a disastrous test flight on Friday.

One of the pilots was killed in the crash while the other is said to be in a critical condition.

On Twitter current and former astronauts, space officials and others offered their sympathy: