I'm not sure specifically as there could be various novels with such a title. It might be about the final astronaut in a particular space exploration scenario, perhaps dealing with themes like the end of a space program, the isolation of being the last person in space, or the challenges faced when there are no more future astronaut missions planned.
I don't know the author of 'the last astronaut novel' as the title alone doesn't give that information. There could be many relatively unknown or new authors with such a title for their work.
Well, in many science fiction stories, the idea of the 'last astronaut' can represent the end of an era of space exploration. Shawn Welling might be a symbol of the final attempt or the last hope in a deteriorating space - related situation. Maybe his story could be about facing some ultimate challenge in space that no one else can take on, like a threat to the entire universe that only he can try to stop.
Shawn Welling might be a very brave character. As the last astronaut, he's likely to have some extraordinary skills. He could be highly trained in piloting spacecraft, handling various scientific equipment in space, and dealing with emergency situations.
Imagine being alone in the vastness of space and seeing an unidentified object approaching rapidly. There are so many unknowns out there. It could be a piece of debris, but what if it's something else? The feeling of helplessness would be overwhelming.
The last person to become a god in the Douluo Continent series of novels was Tang San. Tang San was the male protagonist of Douluo Continent. He had displayed extraordinary talent and hard work in the process of cultivation, allowing him to raise his cultivation and become a god. The other figures like Xu Sanshi and Hu Liena hadn't become gods.