Survival: Start Wandering the Universe and Become an Orphan

On the first day, I built a rocket and flew out of the desert planet. The next day, I came to a planet full of oceans, ready to search for life. On the third day, I came to a strange planet. Unfortunately, the intelligent creatures here are still in the primitive stage. In the future, there are only 100 people left on earth, and there is terrible acid rain in the sky 24 hours a day. Since 80% of the earth's land turned into desert 100 years ago, humans have begun to undergo mass extinction... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.