The sizes of cells in living organisms on Earth has been shown to be governed by the strength of the gravitational field near the Earth's surface.

The sizes of cells in living organisms on Earth has been shown to be governed by the strength of the gravitational field near the Earth's surface. In animal cells, a maximum diameter of 10 µm can be attained before auxilliary scaffold-like structures are needed to maintain the structural integrity of the cell. In our solar system, Jupiter's moon Europa (mass 4.80