When you build new things they necessarily blow up during the development process. NASA is hobbled by a flat budget so they can’t afford to blow anything up. So they can’t build anything new, which is why SLS is a bunch of old parts scrapped together.
When you build new things they necessarily blow up during the development process. NASA is hobbled by a flat budget so they can’t afford to blow anything up. So they can’t build anything new, which is why SLS is a bunch of old parts scrapped together.