Editing Paraterraforming and Domed World-Building

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Paraterraforming and Domed World-Building is the "Study of the Interior Universe"—the investigation of the "Engineering and Architectural Strategy" (~1980s–Future) of "Creating" "Habitable Environments" **"Inside"** "Sealed Structures" (Domes, Cylinders, Tubes) on "Alien Worlds" rather than "Modifying" the "Entire Planet" (Full Terraforming, see Article 716). While **Terraforming** "Transforms" "The Planet," **Paraterraforming** "Transforms" **"A Volume Inside the Planet."** From "O'Neill Cylinders" and "Domed Cities" to "Subsurface Biospheres" and "Rotating Habitats," this field explores the "Engineering of Miniature Worlds." It is the science of "Contained Ecologies," explaining why "Building a World Inside a World" "Might Be" "Faster," "Safer," and "More Ethical" than "Changing" the "Host Planet" — and how **"The Interior"** "Might" "Become" the "Home" of "Civilizations."
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== <span style="color: #FFFFFF;">Remembering</span> ==
* '''Paraterraforming''' — (Richard Taylor, 1992). "The Practice" of "Enclosing" "A Large Area" of a "Planetary Surface" in a "Sealed Habitat" and "Terraforming" **"Only That Interior Volume."**
* '''O'Neill Cylinder''' — (Gerard K. O'Neill, 1976). "A Large" "Rotating Space Habitat" (Cylinder shape) that "Uses" **"Centrifugal Force"** to "Simulate Gravity."
* '''Bernal Sphere''' — (John Desmond Bernal, 1929). An "Earlier Concept" of a "Self-Contained Space Habitat" in the "Sphere" shape.
* '''Dome City''' — "The Simplest" "Paraterraforming" "Concept": a "Transparent" or "Semi-Transparent" "Dome" "Covering" a "Crater" or "Valley" and "Providing" "Earth-Like Atmosphere."
* '''Interior World''' — The "Entire" "Enclosed Volume" of a **Paraterraformed** "Structure": "Contains" "Its Own" "Weather," "Ecology," and "Architecture."
* '''Centrifugal Gravity''' — "The Simulation" of "Gravity" in **"Rotating Habitats"** by the "Outward Force" "Experienced" by "Objects" in a "Spinning Structure."
* '''Closed Biosphere''' — (See Article 717). A "Self-Sustaining" "Ecological System" "Inside" a "Sealed Volume" with "No" "External Input" "Required" (besides 'Energy').
* '''Biosphere 2''' — (See Article 732). "The Real-World" **"Test"** of a "Sealed Biosphere" in "Arizona" (1991-1993): "Encountered" "CO₂ Management Issues" but "Taught" "Vital Lessons."
* '''Stanford Torus''' — "A 1974" "NASA Design" for a "Ring-Shaped" "Rotating" "Space Habitat" holding **10,000 People.**
* '''Island Three''' — (O'Neill). "The Largest" "Proposed" **"O'Neill Cylinder"** "Habitat": "32 km Long," "8 km Diameter," holding "Millions of People."
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== <span style="color: #FFFFFF;">Understanding</span> ==
Paraterraforming is understood through '''Containment''' and '''Simulation'''.

'''1. The "Bubble" Strategy (Containment)''':
"Easier than changing a Planet."
* (See Article 716). "Full Terraforming" of "Mars" "Takes" **"Thousands of Years."**
* **Paraterraforming** a "Martian Crater" with a "Dome" "Takes" **"Decades."**
* "The Inside" "Provides" "Earth-like Pressure," "Temperature," and "Atmosphere" **"Immediately."**
* "The Planet Outside" "Remains Unchanged."
* "Safety" is **"A Dome."**

'''2. The "Gravity" Trick (Rotation)''':
"Centrifugal force feels like Weight."
* (See Article 717). "Long-Duration" "Weightlessness" **"Destroys"** "Human Bone," "Muscle," and "Cardiovascular Health."
* **"Rotating Habitats"** "Provide" **"Artificial Gravity"** by "Making" "Objects" "Press" "Against" the "Outer Wall."
* A **Cylinder** "Rotating" at the "Right Speed" "Feels" "Exactly Like" "Standing" on "Earth's Surface."
* "Gravity" is **"A Spin."**

'''3. The "Living" Interior (Ecology)''':
"A world in miniature."
* (See Article 718). **O'Neill Cylinders** "Are" "Large Enough" to "Have" "Their Own Weather" — "Clouds," "Rain," "Wind."
* "They Can" "Support" "Agriculture," "Forests," and "Cities."
* "The 'Sky'" "Is" the "Opposite Wall" of the "Cylinder" — "Looking Up" means "Seeing" the "City" above you.
* "Home" is **"A Pocket Universe."**

'''The 'Island One' Design (1976)'''': (Gerard K. O'Neill). "A Detailed" "Engineering Blueprint" for a "Space Habitat" "Built" "From" **"Asteroid Materials"** (see Article 688). It proved that "Large-Scale" "Off-World Habitation" is **"Physically Feasible"** using "Known Engineering."
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== <span style="color: #FFFFFF;">Applying</span> ==
'''Modeling 'The Paraterraforming Radius' (Calculating 'Population Capacity' from Dome Volume):'''
<syntaxhighlight lang="python">
import math

def calculate_dome_capacity(radius_km, floors=1, m2_per_person=100):
    """
    Shows how big a Dome needs to be to sustain a city.
    """
    # Floor area = pi * r^2 for a hemispherical dome
    base_area_m2 = math.pi * (radius_km * 1000) ** 2
    total_area_m2 = base_area_m2 * floors
    population = int(total_area_m2 / m2_per_person)
    
    if population > 1_000_000:
        return f"STATUS: MEGA-DOME CITY. (Radius: {radius_km}km. Population: {population:,}. A full metropolis)."
    elif population > 10_000:
        return f"STATUS: TOWN-DOME. (Population: {population:,}. A small self-sustaining community)."
    else:
        return f"STATUS: OUTPOST-DOME. (Population: {population:,}. Research station scale)."

# Case: A 1km radius multi-story dome on Mars
print(calculate_dome_capacity(1, floors=10))
</syntaxhighlight>

; Engineering Landmarks
: '''O'Neill's ''The High Frontier'' (1976)''' → "The Definitive" "Technical Blueprint" for **"Space Habitats"** that "Inspired" "A Generation" of "Engineers."
: '''NASA 'Summer Study' (1975)''' → "The First" "Official" "Government Study" of **"Large Space Habitats"** (Stanford Torus / Island One).
: '''Biosphere 2''' → (See Article 732). "The Only" "Full-Scale" **"Closed Biosphere"** "Ever Attempted" — the "Lesson-Giver."
: '''Bezos' Blue Origin Vision''' → "Jeff Bezos" "Explicitly" "Envisions" **"O'Neill Cylinders"** as the "Future" of "Human Settlement" — "Not Mars."
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== <span style="color: #FFFFFF;">Analyzing</span> ==
{| class="wikitable"
|+ Full Terraforming vs. Paraterraforming
! Feature !! Full Terraforming (Planet-Scale) !! Paraterraforming (Dome/Cylinder)
|-
| Timescale || "Centuries to Millennia" || "Decades"
|-
| Resource Requirement || "Planetary-scale (Asteroids, Energy)" || "Manageable (ISRU + Rocketry)"
|-
| Planetary Impact || "Irreversible (Transforms entire world)" || "Reversible (Leave native world intact)"
|-
| Population Limit || "Billions (eventually)" || "Millions per structure"
|-
| Analogy || 'Renovating the whole building' || 'Building a terrarium inside'
|}

'''The Concept of "The Interior Civilization"''': Analyzing "The Philosophy." (See Article 699). If "Most" of "Humanity" "Lives" "Inside" "Structures" rather than "On" "Planets," the **"Concept of a World"** "Changes." "The 'Outside'" "Becomes" "The Void." "The 'Home'" "Becomes" **"An Artifact."** "Culture" "Is" **"Constructed,"** not "Found." "Nature" "Becomes" **"A Design."**
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== <span style="color: #FFFFFF;">Evaluating</span> ==
Evaluating Paraterraforming:
# '''Psychology''': Can "Humans" "Thrive" "Long-Term" **"Enclosed"** in "Artificial Environments" (see Article 715)?
# '''Scalability''': Can we "Ever" "Build" "O'Neill Cylinders" **"Large Enough"** to "Satisfy" "Human Desire" for "Open Space"?
# '''Ethics''': (See Article 716). Is "Paraterraforming" **"More Ethical"** than "Full Terraforming" because it "Leaves" the "Host Planet" "Intact"?
# '''Impact''': How will "Living in a Dome" "Change" **"Human Art"** and **"Religion"**?
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== <span style="color: #FFFFFF;">Creating</span> ==
Future Frontiers:
# '''The 'Dome' Design AI''': (See Article 08). An AI that "Optimizes" **"Ecological Balance"** inside a "Sealed Biosphere" in "Real Time."
# '''VR 'O'Neill Cylinder' Life''': (See Article 604). A "Walkthrough" of a **"Rotating Island Three"** where you "Look Up" to "See" the "City Arching" "Over Your Head."
# '''The 'Biosphere' Operations Ledger''': (See Article 533). A "Blockchain" for **"Tracking"** "All Biosphere Inputs/Outputs" in "Real-Time" for "Ecological Stability."
# '''Global 'Interior World' Rights Council''': (See Article 630). A "Planetary Agreement" on the **"Governance"** and **"Rights"** of "Citizens" in "Off-World Paraterraformed Habitats."

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