I remembered from school that the cell division limit is about 50 and evidence ( read: Wikipedia ) suggests that as well. https://en.wikipedia.org/wiki/Hayflick

I remembered from school that the cell division limit is about 50 and evidence ( read: Wikipedia ) suggests that as well. https://en.wikipedia.org/wiki/Hayflick_limit https://en.wikipedia.org/wiki/Hayflick_limit A tenth of a light-year is still impressive. Even more interesting is the fact that the single cell organisms living in a human body, outnumber human cells by a factor of 10.