Abstract
In late 2005 I was privileged to gaze upon one of the marvels of the modern world. Buried around 30 metres under the Swiss-French border, near Geneva, is a roughly circular tunnel, about 27 kilometres long. The tunnel is lined in grey concrete, with a painted floor, and is about three metres across. It makes a nice, if somewhat dispiriting, running track, the wall curving endlessly and rather hellishly away in both directions as you puff your way around. In fact, informal races have been held in it; a good time for a circuit is two hours. A more common means of transportation would be a bicycle or one of those two-wheeled electric buggies. I was lucky to get into this tunnel, because from now on and for a good while no one else will be going down there.
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References
Massey, R. (2007) Dark matter mapped. Nature, Online edition, 7 January.
Conselice, C. (2007) The Universe’s invisible hand. Scientific American, February, http://www.sciam.com/article.cfm?chanID=sa006&colID=l&articleID=1356B82B-E7F2-99DF-30CA562C33C4F03C.
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© 2007 Michael Hanlon
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Hanlon, M. (2007). What is the dark side?. In: 10 Questions Science Can’t Answer (Yet). Macmillan Science. Palgrave Macmillan, London. https://doi.org/10.1007/978-1-137-51091-4_6
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DOI: https://doi.org/10.1007/978-1-137-51091-4_6
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