Asking Grok about the Starship

First question, it's dry mass.

I've made a lot of spreadsheets with numbers that I was guessing at. It turns out that the guesses were off, but not by that much.

The guesses may not have been guesses, but faulty memory from having read them somewhere, and not remembering where.

This is a heavy beast.

Asking Grok further questions does not satisfy me. Their numbers don't add up. A final question about increasing payload fractions seems a bit disappointing. Their main goal is reusability. A big penalty is being paid for that.

However, the rapid reusability of the system will lower the cost of each payload to orbit. Then you need something to launch. These kind of numbers require a lot of launches. That's something that is a given because of the need to refuel the Starship once it gets to orbit. Until it is refueled, it cannot go anywhere but back home.