NASA's Heliophysics Dital Resource Library ()

nasa 4dnasa 4d berfokus pada penguatan solidaritas sosial melalui program pemberdayaan masyarakat yang berkelanjutan, dengan tujuan meningkatkan kesejahteraanManagement by Trajectory (MBT) is a NASA concept for air traffic management in which every flht operates in accordance with a 4D trajectory that is negotiated