J-Track 2.5 - Weather Satellites
J-Track uses orbit propagation. It takes an objects' location and direction (a vector) and calculates where the object will be in the future if no direction changes occur. For the shuttle, many changes occur, so we update vectors frequently.

NASA Institute for Advanced Concepts
The NIAC was formed for the explicit purpose of being an independent source of revolutionary aeronautical and space concepts that could dramatically impact how NASA develops and conducts its mission. The Institute is to provide highly visible, recognized and high-level entry point for outside thinkers and researchers.

Aerospace Industries Association
AIA represents the nation's leading manufacturers of commercial, military and business aircraft, helicopters, aircraft engines, missles, spacecraft, and materials.

National Aeronautics and Space Administration
Visit this great site to find out all about NASA. Stay up-to-date by exploring our latest agency, mission and research highlights. Read about groundbreaking events or visit our special sections for kids, educators and students. Explore the many facets of NASA from our administration and leadership to our mission and vision for the future, to business, research and career opportunities. We also have links to other special NASA related sites.

Military and Aerospace Electronics
We offer information that focuses primarily on mil specs, commercial off-the-shelf technologies, rugged design, and aerospace electronics issues for designers and aerospace engineers in the military and aerospace industries.