The NASA Advanced Supercomputing (NAS) division is part of the Ames Research Center Information Sciences and Technology Directorate. The NAS home page describes "leading-edge high performance computing and its role in many of NASA's critical missions for the 21st century." The site provides news and feature stories of NAS projects, but most of the site's information is in the Research & Technology section. There, you will find descriptions of many research areas and their corresponding papers and reports. Several software packages are available for download; however, some are restricted. Sample datasets of research simulation results are also offered for scientific use.