27 May '16, 2pm

Mars is emerging from a 400,000 year-old ice age

Mars is emerging from a 400,000 year-old ice age

undergoes cycles of planetary warming and cooling, but this has more to do with the “tilt” of the planet than anything else. While Earth’s axis is tilted 23.5 degrees and remains relatively stable over time, Mars has an axis that shifts from 10 to 40 degrees. The wobble in Mars’ orbit is due to two factors: one, it doesn’t have a large moon like we do to stabilize it, and two, its proximity to Jupiter allows it to be tugged by the larger planet’s gravity. When the planet is tilted to an extreme degree, its poles receive more sunlight and its equator cools, causing an ice age.

Full article: http://inhabitat.com/mars-is-emerging-from-a-400000-year-...

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