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Letter: Stepping stone

Published 30 January 2013

From Andrew Climo

New Scientist reported possible NASA plans to capture a 7-metre-wide asteroid and place it in the moon’s orbit (2 January, newscientist.com). A great idea, but why not go for a larger rock to have a permanent platform in lunar orbit from which to launch missions?

It makes sense to put one in high Earth orbit too, for the same reason. Then conventional transports – heavy-lift rockets such as Atlas and Delta – could reach it, dock and transfer supplies. With provisioned and fuelled supply depots also offering emergency shelter, not only is risk reduced, but also potentially, mission complexity and long-term cost.

Newlyn, Cornwall, UK

Issue no. 2902 published 2 February 2013

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