Light Gun A handheld directional light signaling device which emits a brilliant narrow beam of white, green, or red light as selected by the tower controller. The color and type of light transmitted can be used to approve or disapprove anticipated pilot actions where radio communication is not available. The light gun is used for controlling traffic operating in the vicinity of the airport and on the airport movement area.

Aero Linx:The International Virtual Aviation Organization  The International Virtual Aviation Organization is a dedicated, independent, free of charge, service to enthusiasts and individuals enjoying and participating in the flight simulation community worldwide. The International Virtual Aviation Organization was formed to supply high quality services to its users on demand. Providing the Flight Simulation community a highly realistic aviation environment, is IVAO's prime objective. This includes, a real-time system for online flying (as pilot) and controlling (as air traffic controller), databases with aviation information, and organizing training and online events.

"Dawn's visit to Vesta has confirmed our broad theories of this giant asteroid's history, while helping to fill in details it would have been impossible to know from afar... Dawn's residence at Vesta of nearly a year has made the asteroid's planet-like qualities obvious and shown us our connection to that bright orb in our night sky." Source: Carol Raymond, deputy principal investigator at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, CA, in comments concerning NASA's Dawn spacecraft having provided researchers with the first orbital analysis of the giant asteroid Vesta, yielding new insights into its creation and relation to the terrestrial planets and Earth's moon.