Analysis-Musk's Mars mission adds risk to red-hot SpaceX IPO

By Joey Roulette, Ross Kerber and Echo Wang WASHINGTON, Dec 12 (Reuters) - Investors eyeing SpaceX's potential blockbuster IPO may need to brace themselves as CEO Elon Musk balances his risky quest to reach Mars with growing the revenue-rich Starlink satellite broadband business that would offer more reliable shareholder returns. SpaceX, which transformed space travel with reusable rockets and built a global satellite broadband network, ​is targeting a listing next year that could raise more than $25 bi ...