Key PointsRocket Lab is the second-most-frequently launched U.S. rocket.SpaceX is preparing for a much-anticipated IPO.There are ETF options that provide exposure to the space economy.10 stocks we like better than Rocket Lab › Long before the certainty of a SpaceX initial public offering (IPO) existed, Rocket Lab (NASDAQ: RKLB) had glowed brightly on my radar. In fact, it had recently made its way onto my buy list, and I had been waiting for the…