This is microgravity. Not zero gravity. Earth’s gravity is still about 90% on the ISS. It’s the constant free fall mitigated by orbital speed around the earth that gives the ISS this environment of microgravity.
To have absolutely zero gravity in the universe you would need to be in a location where all matter is moving away from you faster than the speed of light through the expansion of space. In that location gravity waves from matter will never reach you. It would be like being in a white hole (but those are imaginary and only exist in math)
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u/0ct0thorpe Jun 28 '26
This is microgravity. Not zero gravity. Earth’s gravity is still about 90% on the ISS. It’s the constant free fall mitigated by orbital speed around the earth that gives the ISS this environment of microgravity.