SpaceX is set to go public next Friday. If all goes according to plan, the company is seeking a valuation of nearly $2 trillion. That would be the biggest initial public offering on record, and it would make CEO Elon Musk the world's first trillionaire. We'll learn more. Then, as part of Marketplace's "What's That Like?" series, we head to Zigong, China, to learn what it takes to be a master lantern artisan.