Key PointsSpaceX, a pioneer in the space economy, could be the largest IPO ever.While the hype is real, some investors may not want to invest in the company at such a high valuation.It's likely that a big chunk of the market will end up having some exposure to the stock eventually.10 stocks we like better than NASDAQ Composite Index › It's hard to remember an initial public offering (IPO) with more hype than SpaceX. The company already has a wid…