• Our story on the European Space Agency’s SMART-1 lunar mission stated that “previous moon trips only circled the equator” (4 October, p 17). In fact, NASA’s Clementine and Lunar Prospector spacecraft have both gone into polar orbits around the moon.
• The letter from Tom Nash referred to carbon-12 micelles and carbon-16 micelles (25 October, p 33). In fact, these should have been C12 and C16 micelles – that is, micelles made from molecules containing 12 or 16 carbon atoms. Carbon-16 is an isotope of carbon having a half-life of 0.75 seconds.
• The UbiTable, an interactive digital image display table mentioned in “Pass the JPEGs please” (11 October, p 22) is being developed by Mitsubishi Electric Research Laboratories in Cambridge, Massachusetts, and not by Mitsubishi, which is a different company altogether.
