Every astronaut since Yuri has a PEMF generator,
much like the PEMF-120 built into every piece of their
equipment, clothing, bedding, rooms, etc. that
surrounds them during space travel.
With out these build in generators providing the
astronauts environment with a constant stream
of PEMF their cell function would cease, and death
would be emanate within days of being away
from earths magnetic field.