Hello, Little Comet

Astronomers tracked a comet that was about to hit the earth, but found that its orbit showed strange and intelligent corrections. When he deciphered the signals that were continuously emitted from the interior of the comet, they turned out to be all the deleted digital memories of human civilization. It turned out that there was a tomb deep in the universe, which was dedicated to collecting the last goodwill deleted by each civilization before its self-destruction.