I'm not sure about whether there could be a world without gravity. According to the hypothesis that says it's a bending of space-time, such a universe would have to have no mass. But that could be wrong, considering that what I've read says that hypothesis doesn't work with quantum mechanics (I don't get any of the stuff I've read about quantum mechanics, though).
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I'm not sure about whether there could be a world without gravity. According to the hypothesis that says it's a bending of space-time, such a universe would have to have no mass. But that could be wrong, considering that what I've read says that hypothesis doesn't work with quantum mechanics (I don't get any of the stuff I've read about quantum mechanics, though).