Rocket Lab (RKLB 1.60%) is the only company besides SpaceX with re-entry capabilities for spacecraft. And yet, as we sit here today, its shares have a measly valuation of just $2 billion compared to SpaceX's reported $200 billion as a private company. Let's see why Rocket Lab stock is down so much and whether investors should buy at these prices. To inch its way into the space flight business, Rocket Lab began operations with its small payload rocket called Electron. It currently launches around four Electr ...