All the while, the field of physics did not seriously consider the possibility of existence of negative mass at the general state.

The standard explanation about negative mass is, if energy level of negative exists, that the state of low energy is stable, and the lowest state of energy is minus infinity, so the positive mass of all emits energy, and it will transit to the energy level of minus infinity, and the universe will collapse. However, at the present, our universe exists without collapsing, so the explanation for this became the strong proof for the nonexistence of the negative mass and the energy level of negative. We have taken this as the natural common sense and teach it to students.

At the center of this background, there is the fundamental proposition that "State of low energy is stable". But, we show that the "State of low energy is stable" proposition is an incomplete one, and in case of a positive mass, it is stable at the low state, whereas, in case of negative mass, it is stable at the high state. Due to this, **the problem of the transition of the energy level of minus infinity does not occur, and therefore, in our universe, the existence of negative mass is possible.**

http://vixra.org/abs/1107.0052

__Birth of the universe from zero energy state.__

Birth of the Universe from Zero Energy State - Bigbang, negative energy,negative mass - YouTube

This is a computer simulation that shows you that the universe led to the current structure of the universe with pair creation of positive energy and negative energy from the zero energy state.

__For characteristics of the negative mass, refer to below video.__

Negative mass, Dark matter, Dark Energy, Bullet Cluster, Antigravity-1 - YouTube

**Assuming that negative mass and positive mass were born together at the beginning of universe, it satisfies the various problems that dark matter and dark energy possess~**

Important Report for Dark Energy and gravity negative mass negative energy dark matter - YouTube

--- Icarus2