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 A top and side view of the Globus Cassus | Globus Cassus to Earth comparison | Globus Cassus | Earth | | Diameter | 85 000 km | 15 % | | Diameter with cables | 318 000 km | — | | Diameter of Moon's orbit | 768 000 km | equal | | Total mass | 5.973×1024 kg | equal | | Water mass | 1.35×1018 kg | equal | | Average depth of sea | 3250 m | 3960 m | | Atmosphere | 5.1×1018 kg | equal | | Average (structural) density | 827 kg/m³ | 6.67 × | | Total (inner) surface area | 9.620×109 km² | 2.22% | | Covered with water | 7.223×108 km² | 47% | | Habitable area | 5.413×108 km² | 11.11% | | | Globus Cassus is a utopian project for the transformation of Planet Earth into a much bigger, hollow, artificial world with an ecosphere on its inner surface. Sunlight would enter through two large windows, and gravity would be provided by centrifugal force. Humans would live on two vast regions that face each other and that are connected through the empty center. Image File history File links Emblem-important. ...
Image File history File links Globus_Cassus_Ortho. ...
Image File history File links Globus_Cassus_Ortho. ...
This article is about Earth as a planet. ...
DIAMETER is a computer networking protocol for AAA (Authentication, Authorization and Accounting). ...
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A percentage is a way of expressing a proportion or a fraction as a whole number. ...
This article is about Earths moon. ...
Two bodies with a slight difference in mass orbiting around a common barycenter. ...
This article or section is in need of attention from an expert on the subject. ...
Scientific notation, also known as standard form, is a notation for writing numbers that is often used by scientists and mathematicians to make it easier to write large and small numbers. ...
“Kg†redirects here. ...
Impact from a water drop causes an upward rebound jet surrounded by circular capillary waves. ...
This article is about the body of water. ...
‹ The template below (Unit of length) is being considered for deletion. ...
“Air†redirects here. ...
In mathematics, an average or central tendency of a set (list) of data refers to a measure of the middle of the data set. ...
For other uses, see Density (disambiguation). ...
An open surface with X-, Y-, and Z-contours shown. ...
Area is a physical quantity expressing the size of a part of a surface. ...
Left panel (The Earthly Paradise, Garden of Eden), from Hieronymus Boschs The Garden of Earthly Delights. ...
This article is about Earth as a planet. ...
Writers in the fields of science speculation and fiction have created in their works several varieties of artificial worlds. ...
Ecosphere has several different meanings: In astronomy an ecosphere is an imaginary shell of space surrounding stars where conditions are such that life might survive. ...
Gravity is a force of attraction that acts between bodies that have mass. ...
Centrifugal force (from Latin centrum centre and fugere to flee) is a term which may refer to two different forces which are related to rotation. ...
Being the Earth/World's antipode in many aspects, Globus Cassus acts as a philosophical model for the opposite-based description of the Earth/World and as a tool to understand the World's real functioning processes. This map shows the antipodes of each point on the Earths surface – the points where the blue and pink overlap are land antipodes. ...
Globus Cassus was proposed by architect and artist Christian Waldvogel and presented at the Venice Architecture Biennale in 2004. It consists of a meticulous description of the transformation process, a narrative of its construction as well as of suggestions on the organizational workings on Globus Cassus. It is also the subject of a book. An architect at his drawing board, 1893 An architect is a person who is involved in the planning, designing and oversight of a buildings construction. ...
It has been suggested that this article be split into multiple articles accessible from a disambiguation page. ...
Detail of exhibition. ...
Properties
The proposed megastructure would incorporate all of Earth's matter. The hydrosphere and atmosphere would be retained on its inside. The ecosphere would be restricted to the equatorial zones, while at the low-gravity tropic zones a thin atmosphere would allow only for plantations. The polar regions would have neither gravity nor atmosphere and would therefore be used for storage of raw materials and microgravity production processes. The movement of water around, over, and through the Earth is called the water cycle, a key process of the hydrosphere. ...
“Air†redirects here. ...
Ecosphere has several different meanings: In astronomy an ecosphere is an imaginary shell of space surrounding stars where conditions are such that life might survive. ...
World map showing the equator in red In tourist areas, the equator is often marked on the sides of roads The equator marked as it crosses Ilhéu das Rolas, in São Tomé and PrÃncipe. ...
A tropic is either of two circles of latitude: Tropic of Cancer, at 23½°N Tropic of Capricorn, at 23½°S Tropic is also the name of a town in Utah, United States. ...
Location of the polar regions Northern Hemisphere permafrost (permanently frozen ground) in purple. ...
Geometric structure Globus Cassus has the form of a compressed geodesic icosahedron with two diagonal openings. Along the edges of the icosahedron run the skeleton beams, the gaps between the beams contain a shell and, where there are windows, inward-curving domes. It has been suggested that this article be split into multiple articles accessible from a disambiguation page. ...
Spaceship Earth in Epcot Center at Walt Disney World is perhaps one of the most famous examples of a large scale geodesic sphere. ...
[Etymology: 16th century: from Greek eikosaedron, from eikosi twenty + -edron -hedron], icosahedral adjective An icosahedron noun (plural: -drons, -dra ) is any polyhedron having 20 faces, but usually a regular icosahedron is implied, which has equilateral triangles as faces. ...
Building material Earth's crust, mantle and core are gradually excavated, transported outwards and then transformed to larger strength and reduced density. While the crust is mined from open pits in the continent's centers, magma and the liquid mantle are pumped across transfer hoses. The core is dismantled from the surface. Earth cutaway from core to exosphere. ...
Earth cutaway from core to exosphere. ...
The planetary core consists of the innermost layer(s) of a planet. ...
Magma is molten rock located beneath the surface of the Earth (or any other terrestrial planet), and which often collects in a magma chamber. ...
Planetary scale Since the stationary cables would stay clear inside the moon's trajectory, the construction of Globus Cassus would not alter the Earth-Moon system. However, on planetary scale the proportions would be altered, with Globus Cassus being only slightly smaller than Saturn, the Solar System's second-largest planet. This article is about Earths moon. ...
Atmospheric characteristics Atmospheric pressure 140 kPa Hydrogen >93% Helium >5% Methane 0. ...
This article is about the Solar System. ...
Construction process Starting at four precisely defined points in the geostationary orbit, four space elevators are built. Consequently they become massive towers, each measuring several hundred kilometers in diameter and extending to a length of about 165,000 km. The towers contain elevators which are used to transport silicate building material to the construction sites at geostationary orbit. Geostationary orbit A geostationary orbit (GEO) is a geosynchronous orbit directly above the Earths equator (0° latitude), with orbital eccentricity of zero. ...
The Space Elevator would consist of a cable attached to the surface and reaching outwards into space. ...
Skeleton and shell The building material is converted into vacuum-porous aggregate and used to form the skeleton. It is built retaining constant symmetry and balance at every moment and will ultimately span around all sides of the earth. Then magma is pumped towards the skeleton, where it is used to form thin shells in the skeletal openings. Eight of these openings are fitted with large, inward-curving window domes made out of silicon glass. Sphere symmetry group o. ...
Magma is molten rock located beneath the surface of the Earth (or any other terrestrial planet), and which often collects in a magma chamber. ...
The Great Rains Having been used up to a large degree, the Earth has shrunk, the polar ice caps have melted and the Earth's mass and therefore gravity has declined. This leads to the sudden loss of the atmosphere and hydrosphere, which wander outwards towards the new World. Globus Cassus' equator zones are equipped with a system of trenches and moulds that will become rivers, lakes and seas as soon as the water has settled. The transfer process of atmosphere and hydrosphere is called "The Great Rains". Gravity is a force of attraction that acts between bodies that have mass. ...
Atmosphere is the general name for a layer of gases that may surround a material body of sufficient mass. ...
The movement of water around, over, and through the Earth is called the water cycle, a key process of the hydrosphere. ...
For other uses, see River (disambiguation). ...
Blowdown Lake in the mountains near Pemberton, British Columbia A lake (from Latin lacus) is a body of water or other liquid of considerable size contained on a body of land. ...
This article is about the body of water. ...
Colonization The moment the Great Rains start, the Earth becomes uninhabitable. Along with massive amounts of seed for all existing plants, the regions of high cultural value, that need to be conserved and reapplied on Globus Cassus have been stored in the skeleton nodes which touch the towers. Humans and animals rise in the towers to await the end of the rains and start settling on the two equator regions.
Plant growth The remaining Earth core is dismantled to build the shells that lie in the pole regions. During this process, the massive heat radiation of the core accelerates plant growth and therefore aids the process of establishing a functioning biosphere. A false-color composite of global oceanic and terrestrial photoautotroph abundance, from September 1997 to August 2000. ...
Feasibility There are many insurmountable problems associated with a project such as this.
The largest structure that could be built using known materials is no more than two thousand kilometers in diameter, using carbon nanotube fibre. A rotating habitat of steel as suggested in the 'Globus Cassus' concept, spun to produce Earth-like gravity, would fall apart if it were more than about 20 kilometers in diameter. Furthermore, the tidal forces exerted on the Globus Cassus by the sun and the moon would tear it apart while construction was underway.
Being at geostationary orbit, the equatorial regions of Global Cassus would have, in the absence of Earth's mass below, an artificial gravity equal to roughly 2% of normal Earth gravity. The same would hold in the archival nodes. Human beings and animals could not survive indefinitely in such microgravity, nor would this be sufficient to sustain a habitable atmospheric pressure.
Finally, the timescales required for construction of such a structure are of the order of millions of years.
See also A Bernal sphere is a type of space habitat intended as a long-term home for permanent residents, first proposed in 1929 by Dr. John Desmond Bernal. ...
A cut-away diagram of an idealized Dyson shell—a variant on Dysons original concept—1 AU in radius. ...
Planetary engineering is the application of technology for the purpose of influencing the global properties of a planet. ...
Understanding planetary habitability is partly an extrapolation of the Earths conditions, as it is the only planet currently known to support life. ...
Artists conception of a terraformed Mars in four stages of development. ...
Jorge Luis Borges short story has been widely translated. ...
Rendezvous with Rama is a novel by Arthur C. Clarke first published in 1972. ...
Literature Globus Cassus, Lars Müller Publishers, with contributions by Boris Groys, Claude Lichtenstein, Michael Stauffer and Christian Waldvogel. Awarded the Gold Medal in international competition "Best designed books from all over the World 2004", (ISBN 3-03778-045-2) Image File history File links No higher resolution available. ...
Image File history File links No higher resolution available. ...
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