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Recent discoveries about Mars suggests that the planet was once much like Earth is today -- with a hot dynamo at its core, intense magnetism in its crust and massive continental plates adrift on its surface.

There's even a possibility that deep rifts cleaving the beds of early Martian oceans between the continents harbored primitive life, said some of the astonished scientists as they speculated about the implications of their findings.

Mars has water, frozen underground and at the polar caps. There is evidence that this water has, in the past and present, flooded the surface in liquid form. Signs of erosion can be found on the slopes of craters and volcanoes. Geological features resembling those on Earth suggest that Mars was once a wet and hospitable planet.

Both planets have seasons and similar rotational patterns. Mars is roughly in the same heat-range as Earth, being next-door in the solar system, and if it had a thicker atmosphere it is likely the two planets would share the same climate. Today, Mars's temperature varies from +1°F to -178°F, with an average global temperature of -85°F. That's cold, but still the solar system's most hospitable for humans.

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15y ago

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