Welcome to Planetary Defense Foundation, an international network of professional & amateur astronomers. Planetary Defense Foundation is designed to share & analyze astronomical data based on new discoveries of Asteroids & Comets in our Solar System & to understand & protect our home planet by sharing simulated research information with results on how to prevent an Asteroid or Comet impact with Earth. Our aim is to simulate the operations of an international global Grid Network group of astronomers to share data simultaneously & effectively on an international scale, Further information is available by viewing the various menus above.