Gelatinous organism

Blob, space jelly, a hypothetical organism that can withstand the vacuum of space.

Biology
A gelatinous organism can live inside asteroids that floats in the vacuum. It can survive in extreme temperatures like 1,050°F and can make its temperature low as -940°F to avoid being destroyed from extreme heat. The gelatinous organism has a nucleus which acts like central nervous system.

Hypothesis
The gelatinous organisms must have came from an organic asteroid where there is carbon. Another theory is that gelatinous organisms is a form of bacteria.