> here's a fun interactive site, requires dom- and css-compliant browser > (in other words, not ie6) > > http://www.roving-mouse.com/planetary/ > > drag and drop planets to see their relative sizes or positions Hey, that reminds me of this (it was posted on Slashdot about a week ago, Java required): http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/ Cool! Beau