Subject: Time: 12:02 OFFICE MEMO Collision risk Date: 96/02/27 On a slightly different subject vis-a-vis TSS and its tether, Philip Chien writes: > ... yeah there's a one in kazillion chance that the satellite and tether > would run in to another spacecraft, or even tangle up into Mir's > structure, but not enough to be a concern. There's been plenty of > other debris which has been put up their accidentally and hasn't > been a concern (e.g. HST solar array, SFU solar arrays, etc.) There's a world of difference between the tether and a solar array. This isn't an area issue -- it's a cross-section intersection issue, and linear dimension becomes more important. The probability of a 10-meter by 3-meter solar array intersecting a particular 1 square-meter cube (say) is hundreds of times smaller than a 20-km tether intersecting that same volume, even if it IS only 1/10" thick.