If we were to have human life on Jupiter we would need to be airborne, since the uninhabitable core of Jupiter is the only solid surface on the planet . There is less than 0.1% of oxygen in Jupiter's atmosphere so one would need a pressurised space suit to go outside. An average day on Jupiter is about 9 hours and 56 minutes, which could prove difficult for the average human to adjust to. Even if it proved impossible to adjust to (which is unlikely, as humans have adjusted to Earth's polar day cycles), we could still darken the insides of the colonies for the approximately three hours of sleep humans would need per day. Jupiter's gravity is over 2 times greater than Earth which would make Jupiter a harsh location for space colonization.