In January, pollster YouGov released new data suggesting a majority of Britons now believe London is unsafe, but only a third of people surveyed in the capital agreed - and 81% of them said their own local area was safe.
He said sending the Orion capsule - which is the spacecraft that the astronauts will travel to the Moon in - and a lunar lander into low-Earth orbit first would reduce risks.
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Rebecca Morelle,Science Editorand
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