It creates its own energy. We use liquid nitrogen at minus 196 degrees. When it turns into a gas it creates a very strong pressure and we use that pressure to activate a mechanical engine." ...

As long as its storage container is well insulated, the liquid nitrogen can be kept at atmospheric pressure for long periods of time and since it’s dense and able to store significant amounts of ...

The increased pressure would allow liquid nitrogen to pool on the surface, meaning a New Horizons mission launched around that time would have seen a much wetter Pluto. But New Horizons could ...