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what is the nture of universe from travelling point of view?is it 2d or 3d?
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The universe is not 2D. It is 3D. Though, with the contributions of Relativity Theory, modern physicists consider the universe to be 3 dimensions of space and 1 dimension of time, making the universe 4D. Others have suggested that the universe has other dimensions that are hidden from our senses. M-Theory seeks to answer such questions.
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i mean we know our solar system,sun being at centre while planets etc. in orbits.
what will happen if from earth we travel perpendiculr to the plane of solar system instead of going from centre of the solar system outwards. will we reach some other system/planets??
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Most likely, Eventually, yes.
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what is above and below earth??
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It depends on what you mean by above and below. Above the north pole is Polaris and above the south pole is Octantis. This changes due to the Earth's
precession. To read more about this, look at the wiki for
pole stars.
