Mars is emerging from a 400,000 year-old ice age
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A new study has found that Mars is emerging from an ice age that ended about 400,000 years ago. While scientists have long believed that the planet has undergone several rounds of ice ages in the past, there have been few physical measurements to actually prove the theory. Now, the journal Science has published the first map of the red planet's ice deposits, along with confirmation of the planet's icy past. Just like Earth, researchers have found that Mars undergoes cycles of planetary...