Scientists have discovered that the surface of the moon can accumulate a huge charge of static electricity - up to 4,500 V has been detected so far. The scientists, writing in Geophysics Research Letters number 34, say that their findings could have significant implications for those planning to colonise the rocky globe.
While astronauts would most likely be protected from any discharge by his or her suit, a spark from the surface could disrupt or even burn out electronic equipment.
More: http://www.theregister.co.uk/2007/02/05/static_moon/