zero gee
No gravitational pull
Zero gee is the condition of weightlessness, where gravity's effects are not felt—as in orbit or freefall.
The term comes from "zero g," where g represents gravitational force.
Astronauts train for zero gee in underwater tanks.
Also written zero-g or 0g.
Absence of apparent mass
- floatingStaying atop liquid
- driftingMoving without purpose
- disorientationLoss of spatial awareness
- nauseaPre-vomiting stomach discomfort
motion sickness · puffy face · inner ear · vertigo · euphoria · somersault · tumble · acrobatics
Extremely weak gravitational force
- vacuumAbsence of matter
- orbitalRevolving around another
- suborbitalBelow orbital altitude
- space stationOrbiting crewed research facility
ISS · spacecraft · capsule · module · airlock · cabin · freefall · space tourism
Venturing outside a spacecraft
- EVAActivity outside spacecraft
- extravehicularOutside a spacecraft
- tetheringFastening with a line
- handrailBar for gripping on stairs
spacesuit · cargo handling · docking · berthing · payload · glovebox
Decreased mineral content in skeleton
- muscle atrophyShrinkage from disuse
- calcium lossMineral leaving bones
- vision impairmentReduced ability to see
- edemaPathological tissue puffiness
countermeasures · resistance training · treadmill · ergometer
Aircraft creating temporary freefall
- drop towerVertical amusement ride
- neutral buoyancyBalanced submersion state
- simulatorDevice replicating real conditions
- analogComparable equivalent
weightlessness
Absence of apparent mass
- floatingStaying atop liquid
- driftingMoving without purpose
- disorientationLoss of spatial awareness
nausea · motion sickness · puffy face · inner ear · vertigo · euphoria · somersault · tumble · acrobatics · reorientation
microgravity
Extremely weak gravitational force
- vacuumAbsence of matter
- orbitalRevolving around another
- suborbitalBelow orbital altitude
space station · ISS · spacecraft · capsule · module · airlock · cabin · freefall · space tourism
spacewalk
Venturing outside a spacecraft
- EVAActivity outside spacecraft
- extravehicularOutside a spacecraft
- tetheringFastening with a line
handrail · spacesuit · cargo handling · docking · berthing · payload · glovebox
bone density loss
Decreased mineral content in skeleton
- muscle atrophyShrinkage from disuse
- calcium lossMineral leaving bones
- vision impairmentReduced ability to see
edema · countermeasures · resistance training · treadmill · ergometer
vomit comet
Aircraft creating temporary freefall
- drop towerVertical amusement ride
- neutral buoyancyBalanced submersion state
- simulatorDevice replicating real conditions
zero geehigh gravity
hypergravity · surface gravity · normal weight · gravitational pull · g-force
zero geeon the ground
In contact with earth
earthbound · grounded · ground-based · groundside · terra firma