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{{ | {{Era|HCW|Forerunner}} | ||
{{ | {{Ratings}} | ||
[[File:Dyson Sphere Diagram.svg.png|250px|thumb|Diagram of a | {{SeeWikipedia}} | ||
[[File:Dyson Sphere Diagram.svg.png|250px||thumb|right|Diagram of a Dyson sphere]] | |||
A '''Dyson sphere''' is a [[Astroengineering|megastructure]] or a series of structures meant to completely encompass a star for the purposes of solar power, or to serve as a massive habitat. The concept was originally described by the physicist [[Wikipedia:Freeman Dyson|Freeman Dyson]] as a system of orbiting [[Wikipedia:Space-based solar power|solar power satellites]] meant to capture a star's entire energy output. Dyson speculated that such structures would be the logical consequence of the long-term survival of technological civilizations, and proposed that searching for evidence of the existence of such structures might lead to the detection of advanced intelligent extraterrestrial life. A three meter thick Dyson | A '''Dyson sphere''' is a [[Astroengineering|megastructure]] or a series of structures meant to completely encompass a star for the purposes of solar power, or to serve as a massive habitat. The concept was originally described by the physicist [[Wikipedia:Freeman Dyson|Freeman Dyson]] as a system of orbiting [[Wikipedia:Space-based solar power|solar power satellites]] meant to capture a star's entire energy output. Dyson speculated that such structures would be the logical consequence of the long-term survival of technological civilizations, and proposed that searching for evidence of the existence of such structures might lead to the detection of advanced intelligent extraterrestrial life. A three meter thick Dyson Sphere with an [[Earth]] orbit radius would require an estimated 2.12057325 x 10<sup>23</sup> cubic meters of material. | ||
The [[Forerunner]]s, being a [[Technological Achievement Tiers|Tier-1]] civilization, were capable of building such constructs in various sizes | The [[Forerunner]]s, being a [[Technological Achievement Tiers|Tier-1]] civilization, were capable of building such constructs in various sizes, from full scale to miniaturized, planet-sized structures. One such structure was even moved into [[slipstream space]] where it would appear in a compressed form, far smaller than its actual size the physical universe.<ref name="goo">'''Halo: Ghosts of Onyx''', ''page 381-382''</ref> Dyson spheres were the basis for the [[Shield World]]s built by the Forerunners as safe havens from [[the Flood]] and the activation of the [[Halo Array]]. However, the Forerunners never made it to the safety of these installations due to the betrayal of the [[Artificial intelligence|AI]] [[Mendicant Bias]], whose defection to the [[Flood]] forced the Forerunners to abandon their plans.<ref>'''[[Halo 3]]''', ''[[Terminal]]s''</ref> Basically, the structure fulfills its function as a "Shield World" perfectly. It protects the occupants of it and gives them a huge "world" to live in. Potentially, an entire new civilization could be constructed in a Dyson sphere. | ||
==Known structures== | ==Known structures== | ||
=== | ===Onyx=== | ||
At the core of the artificial world [[Onyx]] was a [[slipspace]] rift that shunted those that passed through it to a structured Dyson sphere with an [[Earth]]-like, habitable inner surface. This construct is separated from a normal space-time symmetry by advanced Forerunner slipspace technology, making it only a few meters in diameter in real space despite being 300 million kilometers (or approximately two [[Wikipedia:Astronomical unit|astronomical units]] [1 AU is 149,598,000 km]) in diameter on the inside. The Micro Dyson sphere is located in a ''factually'' compressed Slipstream space. In other terms, any object inside might appear to be a certain size, but inside the Slipstream bubble it is much, much larger. This led [[Catherine Elizabeth Halsey|Dr. Catherine Halsey]] to dub it as a "Micro Dyson sphere". The Micro Dyson sphere's star has a spectra and energy output slightly smaller than the dimensions of [[Sol]].<ref name="goo"/> | |||
At the core of the artificial world [[Onyx]] was a [[ | |||
===Flood-controlled Shield World=== | |||
[[File:Shieldogram.png|thumb|right|250px|Diagram of the Flood-controlled Shield World.]] | |||
{{Main|Shield World (Halo Wars)}} | |||
The Forerunners also constructed a Dyson sphere vastly different from the Onyx installation. Unlike the Micro Dyson sphere within Onyx, the construct inside this Shield World was a far smaller structure located in normal space, on the inner surface of an artificial planetary shell. Inside the shell was a network of ship-sized portals allowing access from an opening on the outside to the interior world.<ref>'''Halo Wars''', campaign level ''[[Cleansing]]''</ref> | |||
The | |||
The interior possessed an artificial sun, though it and the entire structure were on a far smaller scale; while the Dyson sphere within Onyx was millions of kilometers in diameter, the diameter of this structure was a mere few thousand kilometers. Unlike Onyx, it was seemingly not only designed as a bomb shelter, but also as some sort of harbor, shipyard, or hiding place for ships, as it contained [[the Apex|the Apex site]], which had dozens of [[Unidentified Forerunner starship|Forerunner warships]] stored within it.<ref>'''Halo Wars''', campaign level ''[[Escape]]''</ref> | |||
</ | |||
==List of appearances== | ==List of appearances== | ||
*''[[Halo: Ghosts of Onyx]]'' {{1st}} | *''[[Halo: Ghosts of Onyx]]'' {{1st}} | ||
*''[[Halo Wars | *''[[Halo Wars]]'' | ||
==Sources== | ==Sources== | ||
<references/> | |||
{{Forerunner}} | {{Forerunner}} | ||
[[Category:Forerunner | [[Category:The Forerunner]] | ||
[[Category:Science | [[Category:Science Fiction Concepts]] |