Hi Sunblok,

Yes, the human body is adapted to life at the surface of the earth.

However, this hardly limits man to this realm. Using his wits man has raised himself aloft in pressurized airplanes, made his home in places no human could survive without massive technological support.

Space is the same. High energy shielding is the key to long duration space flight or habitation - that and reproducing the environment man's anatomy is accustomed to on the earth.

My idea of shielding is much more complex than most folks - as I view shielding not as a big chunk of lead or steel - but rather a layered synthesis of metals and crystals charged and creating fields of energy.

Theoretically, by creating a field which can interface with high energy radiation - you can put this incoming radiation in phase with your field and strip it of it's energy and ability to reach your ship or station.

The shields of the future will indeed be electromagnetic fields of specific frequencies and wavelengths and of complex and diverse natures.

As for bone density and muscle deterioration - this is also due to a LACK of the fields generated on the earth. Fields which constantly resonate with our cell structures. Large ships should be filled with plants and at least a 40 foot diameter circle area with ten feet deep of packed earth under a sealed clear floorchamber. Rotate this circular room to create comparable gravity to the earth - and the astronauts will be much better off. All bigger, long duration ships need to incorporate this type of thing.

This may seem corny - but the fields generated by this earth and the plants will have a stabilizing effect on the astronauts and their metabolism.

Man in space is out of phase with the normal fields he interfaces with constantly. Space sickness is almost wholly related to the absence of specific fields of energy.

Each spaceship of the future will be a polarized craft with specific fields supporting human life and shielding humans from dangerous radiations.

Space travel both long and short term will be mastered eventually - it just will take our top minds to make it happen.

Best wishes,

SDAI-Tech1