What happens to the dead body when you die in space?

Man is mortal. Every person has to accept death. But after death, our bodies are rotten, we all know, but do we know what happens to the bodies in space? Because there is a small concentration of objects in space.
That is, the zero space is not completely empty. Primarily, a very small amount of hydrogen plasma, electromagnetic radiation, magnetic fields and neutrinos lie in this space. Theoretically, it has dark matter and black power.
Space is so much that people still can not imagine. So the bodies of the earth do not rot in the sky like the earth. But what happens?
The body will not be able to absorb the dead body. Because there are many body bacteria in the radiation and airplane, they will die or go to hibernation. If the corpus goes with the orbit of the Earth, it will become a mum because of less stress. As much as the bodies were recovered in the destroyed city of Pompeii due to volcanic eruption in Italy.
Again, if the corpus is outside the Earth's orbit outside the solar system, where the temperature is below zero, the body will become harder to accumulate. Since the heat transfer does not take place in air vacuum, it may take days or even weeks to happen.
As the bodies of the Mount Everest or the Alps Mountains glacier are good for years, the body will be known even after a few million years, until it falls in astrology.