As of my last update in September 2021, the concept of a “bullet train” as we understand it on Earth is not feasible for travel to the moon or Mars due to the vastly different conditions and challenges involved in interplanetary travel.
The term “bullet train” typically refers to high-speed trains that operate on tracks on Earth. Traveling to the moon and Mars involves traveling through the vacuum of space, dealing with microgravity, radiation, extreme temperature variations, and other factors that are vastly different from terrestrial travel.
Interplanetary travel requires spacecraft that are designed to withstand these conditions and provide life support for astronauts during the journey. Spacecraft used for such missions are highly specialized and vastly different from trains or any transportation methods we have on Earth.
While there have been discussions about potential future missions to the moon and Mars using advanced propulsion systems, like ion drives or other technologies, they are not akin to the concept of a “bullet train.” These missions would involve spacecraft that can travel through space, land on the destination planet or moon, and then potentially return to Earth.
It’s always possible that advancements in technology could lead to new and innovative ways of space travel in the future, so it’s important to stay updated with the latest developments from space agencies and research institutions.