Al I just read about Goce at
http://news.bbc.co.uk/2/hi/science/nature/7935621.stm.
It is very impressive. "Goce's accelerometers measure accelerations that are as small as 1 part in 10,000,000,000,000 of the gravity experienced on Earth"
See
http://www.iceinspace.com.au/forum/s...highlight=goce