Sarcophagus
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ONI Research Facility Trevelyan,[1] or the Sharpened Shield as the Forerunners referred to it,[2] is a Dyson sphere formerly located within the artificial planet Onyx.
Description
From the outside, the shell of the sphere was entirely featureless, and was described as being chocolate-brown in color.[3] It used to reside in a slipspace bubble of compressed dimensionality, having a diameter of only 23 centimeters in normal space.[4] However, the space inside the slipspace rift is approximately two astronomical units (300 million kilometers) in diameter and weighs approximately 1.37 solar masses. The Dyson sphere's default environmental conditions are suitable for Earth-based life, but the climate settings could be adjusted for other species' requirements.[5] When enclosed within Onyx, the only means of access to the Sharpened Shield was a small portal, which was located inside the core room antechamber in the core of the artificial planet. The portal was only active for a limited amount of time after the Halo Array had been put into standby mode.[6]
According to Dr. Halsey's calculations, the internal surface area of the sphere is approximately 500 million times the surface area of Earth, or around 255 quadrillion km2. Most of the shield world is verdant forest, with several large cities in between. As the Forerunners never arrived, the shield world is entirely maintained by Huragok and Sentinels. The shield world can transition back into real space if required, becoming a sphere the size of Earth's orbit.
History
The Sharpened Shield was constructed by the Forerunners during the Forerunner-Flood war as a bomb shelter from the firing of the Halo Array.
Near the end of the Battle of Onyx on November 3, 2552, Covenant Fleet Master Voro Nar 'Mantakree led his forces in an attempt to access the Sharpened Shield. However, SPARTAN Kurt-051 detonated a pair of FENRIS nuclear warheads within the core room antechamber after his comrades had passed through the portal, denying the Covenant access.[7] The human survivors, including SPARTAN-II Blue Team, several SPARTAN-IIIs, Dr. Catherine Halsey, and Senior Chief Petty Officer Franklin Mendez, were then seemingly trapped within the shield world. Shortly thereafter, the installation's Sentinels destroyed the artificial surface of Onyx.[8]
When inside the shield world, the human survivors managed to establish contact between the ONI ships outside the sphere, which had already detected the anomaly caused by the slipspace bubble but had no means to access it. In February 2553,[9] the shield world was eventually brought back into normal space by a group of Huragok that the Forerunners had left behind to maintain the structure. There was a considerable difference in the passage of time between the slipspace bubble and real space; while the survivors inside the sphere had only experienced several days, approximately three months had passed on the outside.
Once the Sharpened Shield had been brought back into normal space, the ONI team Kilo-Five entered the sphere. A strip of multi-colored lights activated to guide their dropship to the designated coordinates, where they would land on the surface of the shell. After a momentary blackness and a disorienting sensation for the occupants, they found themselves and their ship inside a hangar facility within the sphere's interior.[3] Halsey and the surviving SPARTANs were then rescued from the Sharpened Shield, but she was immediately arrested by Captain Serin Osman for "committing acts likely to aid the enemy". Meanwhile, ONI science teams were sent in to recover Forerunner technologies from the shield world,[1] which was was named "Trevelyan" in honor of Kurt-051, whose sacrifice allowed humanity to access it.[9]
Several days later, the former Shipmaster Jul ‘Mdama, who was captured by Kilo-Five, was brought to Trevelyan for interrogation by Dr. Magnusson.
List of appearances
- Halo: Ghosts of Onyx (First appearance)
- Halo: Glasslands
