To survive on another planet, humans would need supplies of oxygen, food, water and protection from environmental hazards. The specific needs vary by planet. On Mars, supplies would be needed for power, cooling, waste disposal and recycling air and water. The gas giants like Jupiter would require warm clothing due to cold temperatures. Outer planets like Neptune would need food, water and shelter from cold conditions. Surviving on another planet requires life support systems and protection from each planet's extreme environment.