Figure 2. (IMAGE) Osaka University Caption above: Cross section of typical spallation of a material. Big damage on the lower part of the back surface is clearly seen. Below: Distribution of space debris in earth orbit. Debris with a speed over 10 km/sec exists and may cause serious damages (on space stations and satellites). Credit ESA & NASA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.