A:
Astronomy -- Selected Internet Resouced - Selected Internet Resources -- Astronomy. Science Reference Services; Science Reference Section; Library of Congress [Library of Congress]

K:
Kepler Mission - Kepler Mission to find Earth-size planets in the habitable zones of stars [National Aeronautics and Space Administration (NASA)]

L:
Lunar Reconnaissance Orbiter - The Lunar Reconnaissance Orbiter (LRO) is the first mission in NASA's Vision for Space Exploration, a plan to return to the moon and then to travel to Mars and beyond. [National Aeronautics and Space Administration (NASA)]

M:
Mars Reconnaissance Orbiter - NASA's mission to study the history of water on Mars [National Aeronautics and Space Administration (NASA), Jet Propulsion Laboratory (JPL)]

N:
NOAA Unmanned Aircraft System - This site provides information about measures that effect the world that can only be discovered via unmanned aircrafts. The system established test bed research and operations for climate change, hurricanes, Pacific storms, fisheries enforcement, and protection of marine sanctuaries and endangered species. [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]