SpaceX leads America's space race, while Rocket Lab and ULA duke it out for the No. 2 spot. When Rocket Lab (RKLB 1.75%) reported second-quarter earnings last week, it ignited a multiday rally that sent its stock price soaring as much as 18%. And no wonder. Sales at the small space rocket manufacturer soared 71% year over year, beating analyst forecasts. The per-share loss for the quarter was $0.08 -- not great -- but still better than the $0.10 loss that Wall Street forecast. A historic quarter In fact, Ch ...