Hey, while we're twiddling our thumbs, the weight of the earth...
Jens Gundlach and Stephen Merkowitz from the University of Washington have found that the Earth weighs in at 5.972 sextillion (5,972,000,000,000,000,000,000) metric tons. While this is just a shade under the current textbook estimate of 5.98 sextillion metric tons, it could make all the difference to nailing down the gravitational constant, or Big G.