BlockBeats news that on August 23, SpaceX CEO Musk said that building a fully reusable orbital rocket is one of the most challenging engineering problems for mankind to date, even more difficult than landing on the moon. This is also the reason why it has not been overcome so far. I am cautiously optimistic that the starship will become fully reusable next year. Another key technology is track raising, which is relatively much simpler and is expected to happen next year if you are lucky. By then, human consciousness and life will be able to extend to other planets and even stars. (Jin Shi)