*Read ALL of this. It contains important information in case you're having trouble. Press space to toggle the engine. While the engine is running, your velocity will increase. As it does so, your altitude will increase exponentially. Once your altitude reaches 700, you will be within the Moon's gravity. Whenever your velocity is positive, it means you are going up. When it is negative, it means you are going down. When landing, make sure your velocity is -30 or more, otherwise you will crash. You can then lift off from the Moon to return to Earth.