In the region where Earth located, and Musk was reborn, things were no longer as calm as when he left.
The Heavenly Dew, might be an opportunity for him, but others is was doom.
The moment his blood and everything else in his body essential for life was absorbed by the Heavenly Dew, a creature hidden, or perfectly blending with the entire space Earth was located in become erratic. At first, it was not noticeable bus soon its actions were too large to be ignored.
The first to bear the brunt of the creature's rath and awakening was all the celestial bodies in that space, from the Earth to the sun, then even further stars were annihilated.
Musk on the other hand was in so much pain that he could not even speak or scream, unaware of the changes that happened. Even if he were aware, he would not care. He did not have much relation to that world considering how long had passed even his disciple had probably already died, it is the same reason he never bothered to look back.