With science fiction of the past becoming reality, and current science fiction becoming a reality slowly as well, here is something that I was wondering if it would ever be possible: anti-gravity.
Will we ever have anti-gravity vehicles like in such films as Star Wars? Yes, I know it's not possible in this day and age, unless you count magnetically levitated trains.
How can we achieve anti-gravity right here on Earth? Maybe it could be done by considering the Earth's mass.
Correct me if I'm wrong, but Earth's mass is 5.9736 × 1024 kg, so what is we had somehow develped a completely new type of metal, that's as strong as steel, but has the mass that is less than that of Earth? Wouldn't that mean that if we made a vehicle out of those types of materials, it would be like a leaf that is falling from the tree. Because of the leaf's light weight, it simply glides through the air until it reaches the surface. But what if we had constructed a vehicle that weighs less that a leaf, less that anything known on Earth, would that have the characteristics of negative mass? Or would it need to somehow have a greater mass than Earth?
What I have just said above doesn't quite make sense to some people. That's because everything on Earth has the mass which is less than Earth (obviously), but it's just a mind puzzling thing to think of. How, and if ever, will anti-gravity will be developed?
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