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<h2 style="margin: 0in 0in 10pt">Colonization Projects</h2>
 
<h2 style="margin: 0in 0in 10pt">Colonization Projects</h2>
   
<p style="margin: 0in 0in 10pt">In 2003 NASA conducted a conceptual study called [[Human Outer Planets Exploration]] (HOPE) regarding the future human exploration of the outer solar system. The target chosen to consider in detail was Callisto.</p>
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<p style="margin: 0in 0in 10pt">[[File:Callisto_base.PNG|thumb|left|Artist's impression of a base on Callisto.]]In 2003 NASA conducted a conceptual study called [[Human Outer Planets Exploration]] (HOPE) regarding the future human exploration of the outer solar system. The target chosen to consider in detail was Callisto.</p>
   
<p style="margin: 0in 0in 10pt">It was proposed that it could be possible to build a surface base on Callisto that would produce fuel for further exploration of the Solar System. It could facilitate remote exploration of Europa, or be an ideal location for a Jovian system waystation servicing spacecraft heading farther into the outer Solar System, using a gravity assist from a close flyby of Jupiter after departing Callisto.</p>
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<p style="margin: 0in 0in 10pt">It was proposed that it could be possible to build a surface base on Callisto that would produce fuel for further exploration of the Solar System. It could facilitate remote exploration of Europa, or be an ideal location for a Jovian system waystation servicing spacecraft heading farther into the outer Solar System, using a gravity assist from a close flyby of Jupiter after departing Callisto.</p>In a December 2003 report, NASA expressed the belief that an attempt for a manned mission to Callisto may be possible in the 2040s.<p style="margin: 0in 0in 10pt"></p>
 
<p style="margin: 0in 0in 10pt">In a December 2003 report, NASA expressed belief that an attempt for a manned mission to Callisto may be possible in the 2040s.</p>
 
   
 
<h2 style="margin: 0in 0in 10pt">Possible advantages</h2>
 
<h2 style="margin: 0in 0in 10pt">Possible advantages</h2>
 
===Resources===
 
===Resources===
   
<p style="margin: 0in 0in 10pt">Callisto has a large amount of valuable elements on or near its surface that might be useful for sustaining human life. Compounds detected spectroscopically include water ice, carbon dioxide, silicates, and organic compounds. The abundance of water ice on Europa is a benefit to any considerations for colonization, as water can be provided for colonists' drinking needs or could be broken down to provide breathable oxygen.</p>
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<p style="margin: 0in 0in 10pt">Callisto has a large pp. Of valuable elements on or near its surface that might be useful for sustaining human life. Compounds detected spectroscopically include water ice, carbon dioxide, silicates, and organic compounds. The abundance of water ice on Callisto is a benefit to any considerations for colonization, as water can be provided for colonists' drinking needs or could be broken down to provide breathable oxygen.</p>
   
 
<h3 style="margin: 0in 0in 10pt">Possible subsurface ocean</h3>
 
<h3 style="margin: 0in 0in 10pt">Possible subsurface ocean</h3>
   
<p style="margin: 0in 0in 10pt">In addition to the water ice on its surface Callisto is thought to have a liquid water ocean underneath its icy exterior. If it exists access to this liquid water ocean would be a major difficulty, but could prove to be highly beneficial. Space colonists could create (or, possibly, find) a pocket between the icy surface and the liquid interior in which to establish a base. This location would be protected by the ice overhead, and would be at a more reasonable temperature than the surface, as indicated by the presence of liquid water.</p>
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<p style="margin: 0in 0in 10pt">[[File:Interior_of_Callisto.jpg|thumb|Model of Callisto's internal structure showing a surface ice layer, a possible liquid water layer, and an ice-rock interior.]]In addition to the ice water on its surface, Callisto is thought to have a liquid water ocean underneath its icy exterior. If it exists access to this liquid water ocean would be a major difficulty but could prove to be highly beneficial. Space colonists could create (or, possibly, find) a pocket between the icy surface and the liquid interior in which to establish a base. This location would be protected by the ice overhead and would be at a more reasonable temperature than the surface, as indicated by the presence of liquid water.
   
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</p>
<h3 style="margin: 0in 0in 10pt">Low radiation</h3>
 
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<h3 style="margin: 0in 0in 10pt">Low radiation</h3>Compared to the other Jovian moons Callisto receives much less radiation from Jupiter's radiation belt. On other moons such as Europa, radiation levels would be lethal to Humans within days without proper shielding. Callisto escapes this problem entirely as it is almost completely outside Jupiter's radiation belt. Surface settlements, therefore, would need much less radiation protection and could prove to be easier and safer to build then on other moons in Jupiter orbit.  <p style="margin: 0in 0in 10pt"></p>
   
<p style="margin: 0in 0in 10pt">Compared to the other Jovian moons Callisto receives much less radiation from Jupiter's radiation belt. On other moons such as Europa radiation levels would be lethal to Humans within days without proper shielding. Callisto escapes this problem entirely as it is almost completely outside Jupiter's radiation belt. Surface settlements therefore would need much less radiation protection and could prove to be easier and safer to build then on other moons in Jupiter orbit.</p>
 
 
===Strategic location===
 
===Strategic location===
 
While far out from the inner solar system, Callisto lies within close proximity to several resource-rich locations such as the other moons of Jupiter, Jupiter itself, and the Trojan asteroids. Callisto could be used as a base to launch further exploration or colonization to these worlds. It is also possible that ships bound for locations further out in the Solar System (such as Saturn or Uranus) could stop in Callisto to refuel or resupply.<p style="margin: 0in 0in 10pt"></p>
 
<p style="margin: 0in 0in 10pt">While far out from the inner solar system, Callisto lies within close proximity to several resource rich locations such as the other moons of Jupiter, Jupiter itself, and the Trojan asteroids. Callisto could be used as a base to launch further exploration or colonization to these worlds. It is also possible that ships bound for locations further out in the Solar System (such as Saturn or Uranus) could stop in Callisto to refuel or resupply.</p>
 
 
[[Category:Space colonization by location]]
 
[[Category:Space colonization by location]]

Revision as of 00:22, 3 April 2020

Callisto

Callisto as seen from NASA's Galileo spacecraft.

Callisto, a moon of Jupiter, has been a subject in both science fiction and scientific speculation for potential future human colonization. Callisto is the second largest moon in the Jovian system and the third largest in the solar system. Because of its low radiation levels, geologic stability, and large abundance of water ice, Callisto has long been considered the most suitable place for a human base for future exploration of the Jovian system.

Colonization Projects

Callisto base

Artist's impression of a base on Callisto.

In 2003 NASA conducted a conceptual study called Human Outer Planets Exploration (HOPE) regarding the future human exploration of the outer solar system. The target chosen to consider in detail was Callisto.

It was proposed that it could be possible to build a surface base on Callisto that would produce fuel for further exploration of the Solar System. It could facilitate remote exploration of Europa, or be an ideal location for a Jovian system waystation servicing spacecraft heading farther into the outer Solar System, using a gravity assist from a close flyby of Jupiter after departing Callisto.

In a December 2003 report, NASA expressed the belief that an attempt for a manned mission to Callisto may be possible in the 2040s.

Possible advantages

Resources

Callisto has a large pp. Of valuable elements on or near its surface that might be useful for sustaining human life. Compounds detected spectroscopically include water ice, carbon dioxide, silicates, and organic compounds. The abundance of water ice on Callisto is a benefit to any considerations for colonization, as water can be provided for colonists' drinking needs or could be broken down to provide breathable oxygen.

Possible subsurface ocean

Interior of Callisto

Model of Callisto's internal structure showing a surface ice layer, a possible liquid water layer, and an ice-rock interior.

In addition to the ice water on its surface, Callisto is thought to have a liquid water ocean underneath its icy exterior. If it exists access to this liquid water ocean would be a major difficulty but could prove to be highly beneficial. Space colonists could create (or, possibly, find) a pocket between the icy surface and the liquid interior in which to establish a base. This location would be protected by the ice overhead and would be at a more reasonable temperature than the surface, as indicated by the presence of liquid water.

Low radiation

Compared to the other Jovian moons Callisto receives much less radiation from Jupiter's radiation belt. On other moons such as Europa, radiation levels would be lethal to Humans within days without proper shielding. Callisto escapes this problem entirely as it is almost completely outside Jupiter's radiation belt. Surface settlements, therefore, would need much less radiation protection and could prove to be easier and safer to build then on other moons in Jupiter orbit.  

Strategic location

While far out from the inner solar system, Callisto lies within close proximity to several resource-rich locations such as the other moons of Jupiter, Jupiter itself, and the Trojan asteroids. Callisto could be used as a base to launch further exploration or colonization to these worlds. It is also possible that ships bound for locations further out in the Solar System (such as Saturn or Uranus) could stop in Callisto to refuel or resupply.