Chapter 1909: Fallen
Leaving civilization behind, Gao Gong now appeared in a special region.
The edge of the observable universe.
The observable universe had an upper limit of scale, and that limit was ninety-three billion light-years.
At that limit, there was no wall or obstacle. It was what was known as the "light-cone horizon."
The region within the observable universe was a realm of "light."
Beyond the observable universe was darkness—darkness that no visual organ could penetrate.
To put it more technically, the universe was expanding at an accelerating rate. The recession speeds of those distant regions exceeded the speed of light. This meant that the light emitted by celestial bodies beyond the observable universe could never catch up with our expanding space, leaving them permanently isolated beyond our horizon.
Thus, the world beyond the "observable universe" was one where nothing could be seen.
Of course, within the universe, there was not only the speed of light but also faster-than-light travel, as well as long-distance traversal methods like star gates.
That was why some advanced civilizations tirelessly ventured beyond the "observable universe" to investigate the "unobservable."
And those "unobservable" regions might contain resource planets, incomprehensible forms of life and energy, or even existences with immense scientific research value.
In this field of exploration, the Infinite Starry Archive organization that Gao Gong had joined was one of the leaders.
In fact, the organization had been established for precisely this purpose.
However, just as Gao Gong was wondering whether he should investigate the "Corpse Rain" and establish a connection with the fourth cosmic disaster, the "Ancient Corpse Calamity," a special distress message made his heart stir, and he came directly here.
In fact, if he had not possessed the "Other Shore," this powerful traversal tool, he would most likely have had to