Empirical Earth · Space, Satellites & the Edges of the Map

The ISS isn’t filmed underwater — pools train, orbit films

The claim

“ISS spacewalks are filmed in a pool — you can even see bubbles, and NASA admits it has the tank.”

What is true

◆ Refutation The pool is real and openly documented.

What is measured

NASA’s pool is real, for training, but it isn’t weightlessness. On camera the two diverge: in water bubbles rise and motion damps, while in orbit droplets hang, tools float for hours and dust flies straight. Multi-hour EVAs with no bubbles or divers can’t be a pool, and you can watch the ISS pass overhead yourself.

What would show this is wrong

continuous multi-hour ISS footage showing bubble streams that always rise, scuba divers, or pool walls, or a demonstration that a naked-eye object can be made to transit your local sky on a published schedule, visible worldwide and trackable by independent and rival observers, from a tank in Houston.

Sources

  1. NASA Neutral Buoyancy Laboratory — spacewalk training pool. A 202×102×40-ft tank holding 6.2 million gallons at Johnson Space Center; astronauts rehearse EVAs in pressurised suits for up to link
  2. Fluids in microgravity. In the free-fall (microgravity) environment of orbit there is no buoyancy or convection: water pulls itself into floating spheres by surface tension, gas bubbles do n link
  3. Parabolic (‘zero-G’) flights. Reduced-gravity aircraft (the ‘vomit comet’) create weightlessness by flying a ballistic arc in free fall, giving about 20 to 25 seconds of microgravity per par link
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