No Surprises
A theory is considered correct if it can explain universal physical phenomena, but not for all fields and phenomena. Just like Classical Mechanics, it cannot explain phenomena in the quantum realm, but it is still correct for phenomena in the Macro World.
In the various mechanical relationships involved in daily life, and even in the calculation of planetary Gravity, humans still use Classical Mechanics equations, which are the same everywhere on Earth and in the universe.
The theory proposed by human scientists is similar; it does not apply to the various mechanical relationships involved in daily life, but it applies to environments such as the Black Hole Photon Sphere and even the Event Horizon. Therefore, it is equally applicable to any black hole in this respect.
This is the Cosmic Isotropy; no matter where you are in the universe, the rules of physics remain the same. Of course, this excludes things that have been altered by humans. Just as the Rhomboid Crystal of the Precursor told humanity that Quantum Entanglement could once be used for Hyperdistance Communication but not now, that was the result of interference from some God-Level Civilization.
Without the Precursor leaving this message, civilizations in the Milky Way Galaxy or those emerging in the surrounding star Milky Way Galaxy would never know about it. Consequently, when they one day embark on the Great Voyage to other regions where the rules of Quantum Entanglement might not have been modified, they would question their long-held belief in the Spatial Isotropy Principle.
If this principle is overturned, then the Cosmic View of this civilization will undergo a dramatic change. This may cause the civilization to give up on itself, to believe that exploring the unknown is futile and ultimately perish. Of course, it may also lead the civilization down another path and give birth to another extreme Cosmic Sociology.
Time flies, and forty years have passed in the blink of an eye. In Earth Era, that would be enough for a person to experience many changes in their life. However, in today's human society, a forty-year-old is likely still in school. To the average person, it's just a fleeting moment.
However, during this period, humanity did complete the exploration of this black hole, not all of it, but all that was possible within the scope of its technological capabilities. The theory of the physical rules of the Black Hole Photon Sphere also evolved from its inception to a relatively complete theory during this period.
In addition, humanity has obtained forty years of data on close-range black hole observations.
Both theoretical and practical detection data are a treasure for mankind. Although human technology is currently unable to cross the Innermost Stable Circular Orbit, truly venture into the interior of the Photon Sphere, or even step into the Event Horizon or the interior of a black hole, this data will lay a solid foundation for mankind's future exploration of black holes.
This kind of close-up exploration of black holes and the resulting data are relatively easy for Wandering Civilization to obtain, provided they are lucky enough to encounter a black hole during their space travels, just like humans. Alternatively, Settled Civilization would need to embark on long-distance voyages to explore black holes, requiring them to assemble Long-range Fleet and travel thousands of light-years away to acquire this data.
Take humanity as an example. If we could always stay on Earth, then if we were to launch a scientific research mission to explore a black hole, we would have to assemble a Great Fleet and travel 2,800 light-years away to reach the nearest black hole.
Obviously, navigation technology at the level of Level 3 Civilization is very difficult to achieve, because it would mean a journey of more than six thousand years, after all, the time for resupply and maintenance must be taken into account, and it could take even longer if some unexpected cosmic events occur.
Only Level 4 Civilization could effectively conduct such a long-distance voyage.
On the other hand, as long as a civilization wants to progress and continue to improve its technological level, long-distance voyages are necessary. Even if the main civilization does not go, it must send out Scientific Expedition Fleet to explore, because perhaps the seeds of some advanced technological ideas are hidden in special celestial bodies in the vast sea of stars.
The development of certain technologies or theories may require close observation of black holes or other special celestial bodies to obtain relevant data.
This black hole exploration not only provided humanity with tangible scientific data, but also made the world's leaders realize the value of this data. They even thought that if there really was such a legendary fair Interstellar Transaction Market, then this observational data might be able to be sold.
Where there is market demand, there will be related products.
Just like Longevity Potion, alloy materials, scientific data, technological creations, and Biosphere Resources, information can become a commodity. Humans still remember selling false information to the Nair Civilization.
Even so, humanity's perception of the Nair Civilization is actually quite positive. They were arguably the first civilization of similar standing to coexist peacefully with us. Unfortunately, the vastness of space makes reunion extremely difficult since our parting years ago. Moreover, now that humanity has left the Orion Arm, encountering them again is even more unlikely.
But it doesn't matter, because there's a Nair Civilization here now, though it's not the real Nair Civilization. These Nair People just miss their original civilization, so they haven't changed its name.
That said, in these forty years, besides exploring black holes, humanity has been stopping in nearby Star System to replenish various resources. After forty years of stable development, Human Civilization and even the entire Star Alliance's ships are full of various supplies. In addition, various matters concerning the establishment of the Star Alliance have been perfected in these years, so it is time to set off again.
The destination remained the same; we continued along the original planned route towards the location shown on the star map.
This was the final leg of the journey. After setting off, the Star Alliance, led by Human Civilization, was extremely cautious. Every time they arrived at a Star System, Probe Team would go ahead to explore. These reconnaissance missions were all undertaken by Star Alliance Member Civilizations. The area along the Great Fleet's route was also patrolled by Probe Spaceship.
These tasks are now mostly carried out by Star Alliance Member Civilizations, who act as scouts between the Star Alliance Great Fleet and the exploration zones. Their constant patrols greatly increase the Star Alliance Great Fleet's visibility, minimizing the possibility of surprise attacks from other civilizations.
The Star Voyage Alliance, led by humans, appears to have already established itself as a cosmic power.
The Starry Road is long, light-year after light-year, hundred light-years after hundred light-years. With each crossing of this distance, humanity has traversed the first half of the planned voyage. The journey so far has been much the same as the previous ones; they have yet to encounter any other civilizations, nor Life Planet.
This feels great. As long as this final 800-light-year journey can continue, humanity's journey across the spiral arm will be perfectly completed.
But stories don't happen without coincidences.