NASA announced Wednesday a new strategy review team will assess potential architecture adjustments for the agency’s Mars Sample Return Program, which aims to bring back scientifically selected samples ...

Hamilton also developed a compact notation to make his equations concise and elegant. He used a Greek letter to denote a quaternion or vector, but today, following Heaviside, it is common to use a ...

The Common Format Letter of Agreement between Air Traffic Services Units provides guidance for negotiating, establishing, and describing the conditions for coordination and transfer of aircraft and ...