**Authors:** Fu Yuhua

One of the reasons for 2011 Nobel Prize for physics is "for the discovery of the accelerating expansion of the universe through observations of distant supernovae". But "the accelerating expansion of the universe" is debatable. Through mathematical derivation, according to Hubble's law, the values of far away distance, far away speed, far away acceleration of a galaxy, and the force acted on this galaxy are all the exponential functions of time, these reach the unreasonable conclusions: as time tends to infinity, all of these values will tend to infinity too. Due to the observation of distance is limited, at most we can say: "partial universe is in the state of expansion (including accelerating expansion)." In addition, partial universe (such as the area nearby a black hole) is in the state of contraction. Therefore the correct conclusion is that there exist at least seven states of accelerating expansion and contraction and the like in the universe, namely "partial universe is in the state of accelerating expansion, partial universe is accelerating contraction, partial universe is uniform expansion, partial universe is uniform contraction, partial universe is decelerating expansion, partial universe is decelerating contraction, and partial universe is neither expansion nor contraction".

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[v1] 2015-05-02 09:01:39

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