If we are to expand the exploration of our solar system, our next manned flight should be to Phobos, one of Mars' s moons, rather than to Mars itself  The flight times to each are the same, but the Phobos expedition would require less than half the fuel load of a Mars expedition and would, ttherefore, be much less costly
So, it is clear that Phobos should be our next step in space exploration
Smaller spaceships require less fuel than larger spaceships.