Mind and body metaphysically could be seen as Outer Space and Inner Space. Physically, the Earth and beyond its atmosphere of which can be considered Outer and Inner Space.
Just as the Earth and the human Body are enter twined, meaning, for example, every mineral composing the earth is in the human body, the plants give off oxygen which humans take in in order to live, and vice-versa. The amount of liquid in the human body is the same amount of water as our planet in proportion to land. This being true, there is no other planet that humans can live on. Life develops according to its environment. Everything humans do on earth to sustain our way of life is made manifest in the Human body and on or to our planet. Just as our planet is dying from the results of human pollutions, so are humans dying from the planet’s response, things like high temperatures, floods, viruses, and droughts just to name a few.