Definition: Condition in which no acceleration, whether due to gravity or any other force, can be detected by an observer within a system. It also means the absence of weight or the absence of the force of gravity acting on a body. Microgravity, gravitational force between 0 and 10 -6 g, is included here. (From NASA Thesaurus, 1988)
natural only: WEIGHTLESSNESS SIMULATION and WEIGHTLESSNESS COUNTERMEASURES are also available
See AlsoHypogravity
Other names Zero Gravity; Microgravity; Gravity, Zero
