Do Mars moons have water that could be utilized by human explorers?
The Apollo lunar missions used two spacecraft to land on the moon and return to Earth. A command and service module contained all of the fuel needed to reach the moon, go into lunar orbit, and then return to Earth. But it never touched down on lunar soil. Instead, the lunar module piggybacked to the moon unpowered, then carried astronauts to the lunar surface and back to lunar orbit, to meet up with their ride home aboard the command and service modules. Its purpose fulfilled, the lunar module was abandoned in lunar orbit and never saw Earth again. Splitting the mission into two vehicles saved the tremendous amount of fuel that would have been needed to land a single large craft on the moon and blast off again. For a round trip to Mars, a similar two-spacecraft design is likely, with an orbiter that returns to Earth and a lander that does not. However, much more fuel will be needed than for a lunar mission. An ability to refuel the Earth-return vehicle in Mars orbit would be a huge ass
