Why's microgravity sometimes called zero-g?

 
Why's microgravity sometimes called zero-g? - Transcript

[On screen: Duff Gowanlock, Research test flight engineer]

So, zero-g is a bit of a misnomer, no matter where you go in the solar system, because the sun is so massive, there is always perceptible or measurable gravity.

When you're on the international space station and weightless, although you feel weightless, there is still measurable gravity there.

So, instead of referring to it as a zero-g, we typically use the term microgravity or micro-g to refer to that situation.

[On screen: official signature, National Research Council Canada / Conseil national de recherches Canada]

[On screen: Government of Canada wordmark]

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