The next small step for man - and giant leap for mankind - now seems increasingly likely to be bootfall on a lump of rock and metal more than a million miles from Earth.
The target would be an as yet-unidentified asteroid - one of the countless ancient pieces of debris from the dawn of the solar system that still circle the sun. It might measure just 500 yards across, with a surface area no greater than the Vatican City.
Full article by Philip Sherwell on The Telegraph
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