Stephen G. Bowen of the Navy, a former submariner, and Piers J. Sellers, a British-born astronaut who arranged to carry a piece of bark from Isaac Newton’s apple tree into the weightlessness of space.

皮尔斯还肩负了一个特殊的任务安排：将一块取自艾萨克.牛顿苹果树的树皮，带入零重力的太空中。

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Another three - Michael Foale, Nicholas Patrick and Piers Sellers - all became US citizens to fly with the American space agency (Nasa).

BBC: Honour given to 'UK astronauts'

The British Interplanetary Society has commissioned 10 silver pins, and Dr Patrick is the fourth person to receive one after Helen Sharman, Richard Garriott and Piers Sellers.

BBC: 'UK spaceman' Nicholas Patrick honoured