"Brother, it seems like we've taken a wrong turn. This is the Jixi Divine Throne... Oh, in terms of the astrology we learned at school, we are in a very distant part of Scorpio." Yu Yu astutely shifted the topic, then started to observe the densely packed alternate universe around them.
The universe as observed by people in the past was not false; it was a real mapping chart of the alternate universe. The reason why no extraterrestrial signals were ever captured is naturally because humans reside in a nested world woven by the Nuwa God End, with an existential barrier between themselves and the Otherworldly Dust. What they observed before was merely a shadow of the real universe, like the moon reflected in well water—no amount of scientific instruments used could ever detect the real moon.