Every rocket ever built before Starship was thrown away after one use. Elon Musk just explained on a SpaceX livestream why that single fact made space exploration practically impossible until now.
His analogy was the one that landed hardest.
Imagine if you had to throw away a commercial airplane every time it flew. Not maintain it. Not refuel it. Throw it away and build a new one. What happens to the price of a ticket? What happens to the airline industry? What happens to global travel?
It collapses. Nobody flies.
That is exactly what every space program in history has been doing with rockets. Building them once, using them once, throwing them away. The cost was not a failure of ambition. It was a structural consequence of how the hardware worked.
Starship is the first rocket ever designed for full and rapid reusability.
Not just reusable. Rapidly reusable. The rocket lands, gets caught by the tower, goes back on the launch stand, and flies again without refurbishment. Like an aircraft. No laborious inspection between flights.
Starship B3 is already more than double the thrust of the Saturn 5 moon rocket. Version 4 will be roughly three times. And Musk said they expect Starship to be flying more than once per hour eventually.
That number is hard to absorb.
The most powerful moving object ever built. Flying more than once per hour.
The cost of getting mass to orbit does not drop gradually when that happens. It collapses. And when the cost collapses, everything that was previously impossible becomes a question of how fast you can build.
Reusability is not a feature. It is the entire unlock.
Every other problem in space is downstream of this one.