The fuel is the least concern. They’re using H2+O2, which burns to water and can be completely created by using the excess solar energy during peak times of the day. The costly/unsustainable thing is the huge rocket that is destroyed each launch and must be completely rebuilt from scratch each time.
The fuel is the least concern. They’re using H2+O2, which burns to water and can be completely created by using the excess solar energy during peak times of the day. The costly/unsustainable thing is the huge rocket that is destroyed each launch and must be completely rebuilt from scratch each time.