The light is powered by a particular bioluminescent bacteria (Vibrio fishceri) that the squid draws in from the surrounding water. Every day it expels the old bacteria and takes in a new batch. Newly born squid can't produce the light, but within several hours they become bioluminescent as they take in the bacteria. This development gives scientists a close look at morphogenesis, which is the biological process that causes an organism to develop its shape--one of the fundamentals of development biology. The squid experiment came about when Ned learned about the work of Dr. Jamie S. Foster at the University of Florida in Gainesville. Dr. Foster's work is focused on what happens to this morphogenesis process under micro-gravity conditions. Her work could open up a new area of scientific discovery about how gravity affects animal and plant development.