The Delphic Expanse had been created by an extra-dimensional race of beings from the 26th century known as the Sphere Builders. These Spheres, it was discovered, were responsible for the spatial anomalies that roamed the Expanse, and were in fact responsible for the existence of the Delphic Expanse itself.

On this mission, the crew of Enterprise (NX-01) discovered an expansive system of ancient Spheres that covered much of the Delphic Expanse. The attack, which left seven million Humans dead, prompted United Earth to dispatch the starship Enterprise (NX-01) to enter the Expanse and search for the Xindi to stop them from launching a second, more devastating attack on Earth and thwart their genocidal plans for the Human race. The Xindi attack of 2153 on Earth was launched from the Delphic Expanse in March of that year. ( ENT episode: ' The Expanse' ENT episode: ' Impulse') It was later discovered that the crew had gone insane within two days of entering the Expanse. The Vulcans dispatched the Vaankara to investigate, but contact was also lost with this vessel. In late 2152, the Vulcan vessel Seleya was drawn into the Expanse and all contact was lost. These anomalies often led species from outside of the Expanse to ban entry and exit. ( STO - Yesterday's War mission: ' Terminal Expanse')ĭuring the 2130s, for instance, a Klingon vessel emerged from the Expanse and with its crew anatomically inverted, but still alive. It's remnant was known as Delphic Region.

( ENT episode: ' The Expanse')īy 25th century astrographic reckoning, some of the area formerly claimed by the Delphic Expanse lay in the Celes sector of the Beta Quadrant. Travel through the Expanse was further complicated by numerous subspace anomalies which littered the area at random these anomalies were responsible for numerous inexplicable events. ( ENT episodes: ' Chosen Realm', ' Azati Prime')Įntering and exiting the Expanse was extremely hazardous due to thermobaric clouds which surrounded the area. Events would eventually show that the Triannons were essentially correct. They thought that the Makers were using a system of anomalies to reshape the Chosen Realm into a new form. ( ENT episode: ' The Expanse')Ī native species known as the Triannons called the Delphic Expanse the 'Chosen Realm ' they believed it had been created by beings they called the 'Makers' as a paradise for their eventual return. The Delphic Expanse was a vast region of space, home to numerous species. While its exact dimensions remain unknown, during the 22nd century, Vulcan scientists estimated it to be around 2,000 light years across. The Delphic Expanse was an area of space in the Alpha Quadrant approximately 50 light years from the Sol system. The United Earth ship Enterprise (NX-01) enters the Delphic Expanse in 2153.

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