They need something that can land on Mars and return with a crew. Or something that can put a very large payload on Mars.
A three stage rocket is something you’d use for one-way missions with smaller payloads, or for putting something in GEO. Starship just isn’t optimised for those missions.
A three stage rocket is something you’d use for one-way missions with smaller payloads, or for putting something in GEO. Starship just isn’t optimised for those missions.