Just to clarify, the ISS and its crew are also not in a zero-g environment; they are immersed in Earth's gravitational field, which is very nearly as strong in the Station's vicinity as down here at or near sea-level. The frame of reference demonstrated in this vid is falling freely just as is the ISS. Another interesting thing is that, as the falling frame of reference gets increasingly localized, it gets more approximately like real zero-g, such as Earth's field at infinity.
Just to clarify, the ISS and its crew are also not in a zero-g environment; they are immersed in Earth's gravitational field, which is very nearly as strong in the Station's vicinity as down here at or near sea-level. The frame of reference demonstrated in this vid is falling freely just as is the ISS. Another interesting thing is that, as the falling frame of reference gets increasingly localized, it gets more approximately like real zero-g, such as Earth's field at infinity.
qed100 6 months ago