Mars' magnetic field survived longer

This is a news story, published by Live Science, that relates primarily to Harvard University news.

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Planetary magnetic field

Live Science

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Boost for Mars life? Red Planet's magnetic field may have lasted longer than thought

Summary

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Harvard University scientists say Mars ' magnetic field may have survived 200 million years longer than thought.

Without its global magnetic field, Mars could not ward off the solar wind that began stripping away its atmosphere, including the Red Planet's water, and shield the surface from harmful cosmic rays.

This had significant repercussions for the potential life on ancient Mars , which overlaps into the era when the surface became covered in water.

If the magnetic field didn't disappear until later, then atmospheric loss also began later, which could mean that scientists' timeline of the changing conditions on Mars might need a slight revamp. The new findings were published in August in the journal Nature Communications . Originally posted on Space.com ..

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English

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