I explore the first 2 main hazards of space flight. Radiation and gravity fields. The large and severe hazard of radiation. Ionizing radiation is zipping through space unabated and endlessly from the moment we leave the earth's protective atmosphere and magnetic field. It causes all kinds of harm to cells which cause deadly illnesses like cancer. Radiation shielding is an option, but one that is undeveloped and primitive currently. We are yet to build any space craft with radiation shielding adequate for long term space flight. Also, changing gravity fields remain debilitating problems for astronauts. Too much, too little, or shifting gravity can harm the human body. the more often and longer the body is exposed to these irregular gravity fields, the more the body decays and vital systems are strained. Artificial gravity or even adequate centrifugal force gravity are undeveloped technologies as of now. Germs, disease and bacteria remain health problems with low gravity, as they may mutate much faster and morph into deadly strains.

Hector Vladimir 2024