Weightlessness is the complete or near-complete absence of the sensation of weight, i.e., zero apparent weight. It is also termed zero g-force, or zero-g (named after the g-force) [1] or, misleadingly, zero …

weightlessness, condition experienced while in free-fall, in which the effect of gravity is canceled by the inertial (e.g., centrifugal) force resulting from orbital flight. The term zero gravity is often used to …

The phenomenon of "weightlessness" occurs when there is no force of support on your body. When your body is effectively in "free fall", accelerating downward at the acceleration of gravity, then you are not …

Weightlessness is the sensation of having zero apparent weight, but an object's mass remains unchanged. An astronaut in orbit is weightless but still has the same mass.

Mar 19, 2025 · But is gravity really gone? What does weightlessness do to the human body? And how does it change the way we live, work, and even think? Welcome to the fascinating world of zero …

Weightlessness is the experience (by people and objects) during free-fall, of having no apparent weight. This condition is also known as microgravity.

Aug 19, 2025 · The sensation of weightlessness describes a feeling of lightness or the absence of perceived weight, rather than a true lack of gravitational force. While gravity continuously acts upon …

Nov 22, 2023 · While microgravity -- which is the very low gravity environment that creates the illusion of weightlessness -- looks like fun, it places great demands on your body.

WEIGHTLESSNESS definition: 1. the state of having or appearing to have no weight; the fact of not being affected by gravity…. Learn more.

In weightlessness, objects do not exert normal force on surfaces, leading to a unique environment where fluids behave differently and physical motions are altered.