To demonstrate gravity independent of Earth's influence, an experiment would need to occur in space with sufficient mass to be observable by the naked eye. A minimum mass comparable to that of a planet is necessary for visibility, as smaller masses would not create a noticeable gravitational pull. Historical methods, like the torsion balance used in the Cavendish experiment, highlight the challenges of measuring gravity accurately. Two 10kg masses, if positioned 1 meter apart and initially at rest, would collide within approximately 8 hours, but achieving such precise initial conditions is complex. Ultimately, demonstrating gravity in this manner requires significant mass and careful arrangement to be effective.