TYPES OF SPACECRAFT A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z           HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site Earth resources satellites Unmanned orbiting spacecraft that collect information about Earth’s atmosphere, land, and oceans for scientific research and resource management. They fall into the more general category of Earth observation satellite. Related category    • TYPES OF SPACECRAFT Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP