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| | Mars Gravity Biosatellite Program |
 | | That being said, a rotational environment does not quite simulate an actual gravity field: there are a number of secondary effects, all of which are intensified for small radii—gravity gradients across the spacecraft, weight changes with angular movement, and most importantly, Coriolis forces that confuse the vestibular systems within our inner ears. |
 | | Though artificial gravity may enable us to cross vast regions of space, it can no longer help us on the surface of Mars or other new worlds we might explore. |
 | | No solid research currently exists to answer these questions, but they must be answered, for if humans are to travel to Mars, and someday live there, we must know whether they can adapt, and if they do, whether they can ever return again safely to the Earth. |
| www.marsgravity.org /science (606 words) |
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