re: Weight and MASS of Current ISS - btw
Yes, I looked it up, but feel free to verify:
Weight of ISS as of Dec. 2006: 471,444 lbs
Weight of S3/S4 segs.: 35,678 lbs
Total weight after STS 117 delivery: 507,122 lbs
There are also seven guests added to the three already on board (add on sarc.).
