Original Passage:
Speed is everything on the way to Mars and not only
because a seven-month trip in a confined space can be tortuous. The bigger
problem is that it can be lethal because of radiation exposure in deep space,
where the absence of Earth’s magnetic field leaves astronauts far more exposed
to deadly cosmic energy than they are in orbit or on the way to the moon.
Paraphrase:
To reach Mars, rapidity is the most important factor for
two reasons. First of all, because of the winding road that requires 7 months
to pass through. The second reason, which is more important, is the danger that
may be suffered by astronauts because of the deadly radiation that is caused by the
lack of gravity in outer space (Kluger,2004,p.48).