The new space race is being driven by companies chasing profit rather than governments chasing prestige, and this Spark documentary lays out the engineering behind the rockets built for that fight. It covers the modular design of the Orion capsule and the reusability breakthrough of the Falcon Heavy, tracing how boosters that once burned up on reentry now land themselves and fly again. The focus stays on hardware: propulsion systems, staging, and the payload capacity needed to carry loads over 100 tons into orbit, whether for satellites, cargo, or eventual crewed missions. Engineers and industry commentary explain why reusability changes the cost math of spaceflight so fundamentally, and how competing designs from different companies are converging on similar solutions to the same problems of thrust, weight, and heat. The film treats the current era as a turning point, comparing today's private-sector push against the government-run programs of the twentieth century, and makes the case that mega-rockets are the technology that decides who gets to operate in space next.