A calcium receptor called CaR co-ordinates messages from within the growing foetus that instruct the lungs to develop thousands of channels and tiny air pockets. This complicated structure is what will ultimately allow oxygen to move from the air into the baby's blood stream. (Medical Tech)
"This system creates a Magnetic Field Bubble that would deflect the dangerous radiation away from the spacecraft." According to Nasa and the European Space Agency, both planning manned missions by 2050, "space weather" is the single greatest obstacle t (Aero & Space)