Space Junk Almost Caused Collision
The quantitiy of debris in space has been causing concern to agencies involved with exploring space and companies depending on satellites installed there. But now space agencies have demonstrated the capability of a new system which tracks debris and is intended to prevent collisions. The system detected a near-collision situation in which 3.8 tons of rocket booster waste left over from a Chinese launch threatened the 8 ton European Space Agency (ESA) Envisat Earth remote-sensing spacecraft.

