Here's why:
* Gravity is always present: Gravity is a fundamental force of nature, and it exists everywhere in the universe.
* Microgravity: The term used to describe a state where the effects of gravity are significantly reduced is microgravity. This is experienced in space, particularly in orbit around Earth, where objects appear weightless.
* Freefall: Another related term is freefall, which refers to a state where an object is falling freely under the influence of gravity, experiencing no other forces. Astronauts in the International Space Station experience microgravity because they are in a constant state of freefall around Earth.
So, while "almost zero gravity" is understandable in a casual sense, it's not technically accurate. It's better to use the terms microgravity or freefall when referring to these situations.