When traveling through space, star charts were the most important thing—nothing else came close. In other words, even a spaceship was less important than a star chart!
A star chart contained stellar systems, interstellar movements, rogue planets—including rogue black holes—battlefield markings, asteroid regions, interstellar passages, Supernova Explosion impact zones, neutron star jets and their sweep ranges, records of space magnetic storms, military bases and alert zones, territorial divisions, and more. Sometimes, it even included historical records and bizarrely dangerous regions.
A single star chart could be said to encompass everything. Only powerful nations could produce comprehensive star charts.
Especially those inexplicable danger zones, such as the famous KBC Void. And there were countless smaller voids throughout the universe. Some said they had formed from the collision of two universes; others claimed they had resulted from the invasion of Dimensional Space or Higher-Dimensional Worlds, and so on. But exploring such dangerous areas required the backing of a powerful national apparatus.
Thus, the star chart Chu Fei had was from a thousand years ago. After the Yanhuang Federation collapsed, it had no longer possessed the means to update its star charts.
Still, even a thousand-year-old chart remained useful. Time moved slowly on an interstellar scale. The Solar System took 210 to 220 million years to orbit the Milky Way once, with an uncertainty of ten million years.
There were many reasons for that uncertainty. First, the measurements themselves were inaccurate.
From humanity's birth on Earth until now, the Solar System had traveled less than "one minute" along its path through the Milky Way. If the Milky Way were considered a giant clock, one minute would be roughly equivalent to 3.5 million years!
That comparison alone showed just how little humanity understood the universe. You could not run a hundred meters in ten