love_444 (Mariana V.I.P): No only can you not have 0 gravity on the earth, there is no place in the universe with 0 gravity. following the inverse square law, you will always have a fraction of what you had before. Yes, Mars is attracting you. *
27-12-07 - 14:11:04

love_444 (Mariana V.I.P): If you don't resist this gravitational attraction, and just free-fall toward the earth from an altitude, you can sort of simulate an environment without gravity. If you hold something in your hand and let it go, it won't drop to your feet. The reason for this is that you are already dropping just as fast as the object is. Now, in free-fall, you don't necessarily have to be moving toward the earth, just accelerating toward it. *
27-12-07 - 14:15:08

love_444 (Mariana V.I.P): If, say, someone loads both you and an anvil in a catapult and fires you both upward, you will both move first upward, then eventually downward. Throughout the entire trajectory, you and the anvil are in free-fall, and neither you nor the anvil drops relative to the other. This is how the weightlessness-simulating "vomit comet" airplane works: it flies in a curved path upward, then downward so that its acceleration matches that due to gravity. *
27-12-07 - 14:18:10

love_444 (Mariana V.I.P): Free-fall rides at amusement parks "simulate" a zero-g environment. An elevator could easily be rigged to give a zero-g experience for a limited time. Of course it would have to be slowed down in a safe manner so that no one got hurt. Dr. Bradburn *
27-12-07 - 14:19:50

love_444 (Mariana V.I.P): If there's an astronaut onboard our Zero-G USA flight, he'll be there to teach you how to fly, float and flip through the cabin. The only thing serious about our US zero-gravity flights is the safety. Each Zero Gravity Space Mission is designed for incredible fun. The plane's interior has been converted into a zero-gravity playroom, complete with padded flooring and video cameras to record all the smiles and laughter. *
27-12-07 - 14:46:24