Story of the Vanguard satellite program. Discusses the planning, setbacks, successes, and launchings, and includes effects of individual and mass psychology.

EOS is the centerpiece of NASA's Earth Science Enterprise (ESE). Includes a science component and a data system supporting a coordinated series of polar-orbiting and low inclination satellites for long-term global observations of the land surface, biosphere, solid Earth, atmosphere, and oceans.

Information on the IMAGE mission at Southwest Research Institute.

Features the project page of an Earth orbiting spacecraft to study the Solar radiation.

A planned mission by the SpaceDev commercial corporation. Includes an overview of the mission and information on its experiments.