There are growing doubts within China’s space sector that Starship, the world’s most powerful rocket being developed by SpaceX in the United States, will ever overcome its engineering and financial challenges and deliver for founder and CEO Elon Musk.Starship’s latest flight on Friday – weeks before the company’s expected initial public offering (IPO) – was described as “mostly successful” by the company after engine failures occurred in both the first and second stages.After the first stage...