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Definition of 'Zero Gravity'
Definition: Zero Gravity or Zero-G can simply be defined as the state or condition of weightlessness. It also refers to the state in which the net or an apparent effect of gravity (i.e. the gravitational force) is zero.
Description: The condition of apparent weightlessness occurs when a body in a gravitational field changes places to neutralize its gravitational force. For example, astronauts are seen floating around in the outer space because of this phenomenon. Astronauts orbiting the Earth in a space station experience zero gravity or weightlessness because their spacecraft continuously undergoes changes in velocity in its orbit in order to prevent it from being pulled into the atmosphere. This acceleration, which is often known as a centrifugal force, counterbalances gravity. Hence, they experience Zero Gravity or weightlessness.
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