Exploring Mars

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at
the same time building up an extensive scientific picture of Mars-its state
at the present moment, its history and what the future developments are
going to be.

As astronauts journey to Mars and finally reach there the main concern
and top priority when landing will be the astronauts safety. There will be
more flexibility when choosing a landing site. The astronauts will decide
where they want to land but must take into consideration that the roving
vehicles would be able to provide extended range when travelling on the
surface of Mars. This most probably would ensure that the sites that are
in the scientists interest would easily be accessible.

Possible landing sites must be chosen under one goal, that would be
the overall understanding of the surface and not by a place that looks
attractive or has special features even if they seem alluring. The things
that have to be taken in account for possible landing sites are:

- guaranteeing that the explorers will touch ...

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sites other than these, but they are
difficult to reach for a manned mission to Mars. The Polar region sites
are precluded for manned missions because fuel would be expensive to change
form an initial parking orbit to a tilted orbit in order to make it
possible to land there. With non-polar sites, it would be difficult to
land on a gigantic volcanoes or canyons. The problems with visiting the
southern hemisphere regions is that it is less attractive then the northern
hemisphere and the terrain is much more rougher. These areas are also the
origin of dust storms and if a spacecraft were to land there it would be
foolish. Although these regions are not going to be explored by ...

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