Before revision: February 22, 2010. is a property, or ability of a spacecraft to perform to its design objectives and navigate successfully through both the space envirionment and the atmosphere as a part of a journey to or from space.
After revision: February 22, 2010. is a property, or ability of a spacecraft to perform to its design objectives and navigate successfully through both the space environment and the atmosphere as a part of a journey to or from space.