Editing Dyson sphere

{{Era|HCW|Forerunner}}

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[[File:Dyson Sphere Diagram.svg.png|250px|thumb|right|Diagram of a hypothetical Dyson sphere constructed in the [[Sol system]].]]

Most notably, 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]] [[05-032 Mendicant Bias|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. One such structure, [[ONI Research Facility Trevelyan|The Sharpened Shield]], was even moved into [[slipstream space]] where it would appear in a compressed form, far smaller than its actual size in the physical universe.<ref name="goo">'''Halo: Ghosts of Onyx''', ''page 381-382''</ref>

===The Sharpened Shield===

At the core of the artificial world [[Onyx]] was a [[slipstream space|slipspace]] rift that shunted those that passed through it to a [[Trevelyan|structured Dyson shell]] with an [[Earth]]-like, habitable inner surface. This construct was separated from a normal space-time symmetry by advanced Forerunner slipspace technology, making it only 23 centimeters 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 was 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 Halsey|Dr. Catherine Halsey]] to dub it as a "Micro Dyson sphere". The Dyson sphere's star has a spectra and energy output slightly smaller than the dimensions of [[Sol]].<ref name="goo"/>

===Shield 0459===

{{Main|Shield 0459}}

 

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>

The shield placed by the Forerunners around the [[San 'Shyuum]] home system was a different iteration of the Dyson sphere concept, known as a "Dyson swarm". Instead of being a physical shell, the sphere was comprised of trillions of automatons known as [[vigilant]]s, which constantly transitioned in and out of slipspace. Extending four hundred million kilometers from the system's star, any ships passing through the shield would require special access codes or be vaporized by the vigilants.<ref name="cryptum144"/>

<gallery widths="160">

File:ShieldWorld matte 1.png|View inside the miniature Dyson sphere of the Flood-controlled Shield World.

File:Shieldogram.png|A holographic diagram of the Flood-controlled Shield World.

*''[[Halo Wars]]'' {{1st}}

*''[[Halo 4]]''

*''[[Halo: Ghosts of Onyx]]''

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[[Category:Science Fiction Concepts]]