Can Humans Survive Long-Term in Deep Space? Maybe

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A new theory suggests that successful long-term human habitation in deep space requires a self-restoring, Earth-like ecosystem to sustain technology, infrastructure, and society. Crucial elements include replicating Earth’s 1G of gravity and maintaining a dependable oxygen supply, water availability, waste management, and a functioning agriculture system, all of which necessitate substantial energy likely greater than our current capabilities.

Is it possible for humans to survive long-term in deep space? The answer is a lukewarm maybe, according to a new theory that outlines the intricate challenges of maintaining gravity and oxygen, securing water, cultivating food, and managing waste while being distant from Earth.

Dubbed the Pancosmorio theory – a word coined to mean “all world limit” – it was described in a paper published in Frontiers in Astronomy and Space Sciences.

“For humans to sustain themselves and all of their technology, infrastructure, and society in space, they need a self-restoring, Earth-like, natural ecosystem to back them up,” said co-author Morgan Irons, a doctoral student conducting research with Johannes Lehmann, professor in the School of Integrative Plant Science at Cornell University. Her work focuses on soil organic carbon persistence under Earth’s gravity and varying gravity conditions. “Without these kinds of systems, the mission fails.”

The first key is gravity, which Earth life needs to function properly, said co-author Lee Irons, Morgan Irons’ father and executive director of the Norfolk Institute, a group that aims to solve problems of human resilience on Earth and in space.

“Gravity induces a gradient in the fluid pressure within the body of the living thing to which the autonomic functions of the life form are attuned,” he said. “An example of gravity imbalance would be the negative effect on the eyesight of humans in Earth orbit, where they don’t experience the weight necessary to induce the pressure gradient.”

Morgan Irons said that it would be unwise to spend billions of dollars to set up a space settlement only to see it fail because even with all other systems in place, you need gravity.

Humans and all Earth life have evolved within the context of 1G of gravity. “Our bodies, our natural ecosystems, all the energy movement, and the way we utilize energy are all fundamentally based upon 1G of gravity being present,” she said. “There is just no other place in space where there is 1G of gravity; that just doesn’t exist anywhere else in our solar system. That’s one of the first problems we must solve.”

Oxygen is another key factor. Earth’s ecosystem generates oxygen for humans and other life forms. If a technologically advanced primary and a backup system failed to provide oxygen for the moon base, for example, it would mean instant doom for the astronauts. “A reserve exists everywhere in Earth’s nature,” Lee Irons said. “Think of the hundreds of thousands of species of plants that generate oxygen. That’s the kind of system reserve we need to replicate to be truly sustainable.”

Such an ecological system of an outpost would need an enormous amount of energy from the sun. The more distant planets and moons from the sun in our own solar system get decreased amounts of energy.

“You’ll need a lot of energy,” Lee Irons said. “Otherwise powering the ecological system of an outpost will be like trying to run your car on a cell phone battery or probably even worse, trying to run your entire house and household on a cell phone battery.”

Reference: “Pancosmorio (world limit) theory of the sustainability of human migration and settlement in space” by Lee G. Irons and Morgan A. Irons, 6 March 2023, Frontiers in Astronomy and Space Sciences.
DOI: 10.3389/fspas.2023.1081340

6 Comments on "Can Humans Survive Long-Term in Deep Space? Maybe"

  1. stephen schaffer | June 25, 2023 at 10:04 am | Reply

    The more relevent and critiical question is: can humans survive long term on Earth.

  2. stephen schaffer | June 25, 2023 at 10:05 am | Reply

    The more relevant and critical question is: can humans survive long term on Earth.

  3. So… What your saying is that, unless we find a way to duplicate Earth in a Machine, we are SOL for long-term Space travel.
    Maybe one should spend one’s “resources” cleaning up, and maintaining (((Spaceship Earth!!!)))?
    Yep. That “hackneyed concept” has been kicking around for 50+ years. Lost in the sauce of Capital-intensive, outright Science Fiction and Fantasy. The conquest(?) of
    Space — must first be applied to the SPACE between one’s EARS.
    That hollow ringing is in the Mind, and ISNOT the Universe beckoning with a song of Conquest.

  4. No, humans will never be able to colonize space. It is boondoggle used to steal money from taxpayers and feed the corporate pigs.

  5. david w. ferrin | June 25, 2023 at 9:41 pm | Reply

    So in the referenced paper “There are conditions from which human life has evolved. Such conditions are required to sustain human life at its current level of growth. The availability of such conditions to humans defines the limit of their world.” This is stating things about a people at “a current level of growth”, But when we traveled to a new land we did not take our current level of growth with us, many died on the way to a new land…

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