Elon Musk

And how many of them?

It's very, very clean.

There's 33 on the booster.

Whoa.

And each Raptor engine is producing twice as much thrust as all four engines on a 747.

Wow.

So that engine is smaller than a 747 engine, but it's producing almost 10 times the thrust of a 747 engine.

Wow.

So extremely high power-to-weight ratio, and there's 33 of them.

How much further can you... We're pushing the limits of physics here.

So...

And really, in order to make a fully reusable orbital rocket, which no one has succeeded in doing yet, including us, but Starship is the first time that there is a design for a rocket.

where full and rapid reusability is actually possible.

There's not even been a design before where it was possible, certainly not a design that made any hardware at all.

We live on a planet where the gravity is quite high.

Earth's gravity is really quite high.

And if the gravity was even 10 or 20% higher, we'd be stuck on Earth forever.

Yeah, we certainly couldn't use conventional rockets.

You'd have to blow yourself off the surface with a nuclear bomb or something crazy.

So on the other hand, if Earth's gravity was just a little lower, like even 10, 20% lower, then getting to orbit would be easy.