Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The NASA Advanced Supercomputing (NAS) Division is located at the NASA Ames Research Center in Moffett Field, California (near Mountain View, California). It provides computing resources for various NASA projects including: simulating space shuttle launches for future space missions, projecting the impact of human activity on weather patterns, by designing safe, efficient space exploration vehicles and aircraft. The NAS houses the Columbia Supercomputer, a 10,240-processor supercomputer built from 20 SGI Altix systems, each powered by 512 Intel Itanium 2 processors.