The first core stage for Nasa's "mega-rocket", the SLS, has left its factory in New Orleans for crucial tests to assess its readiness for launch. The Space Launch System (SLS) is a critical part of the space agency's Artemis programme, which aims to return Americans to the Moon by 2024. Nasa Moon rocket core leaves for testing
There must be an engineering limit to just how big a conventional rocket can be built. I think that if humanity wants to become a multi planet species a different way to get significant mass out of the gravity well will need to be found.
