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© CNRS Images - 2008

Why are Mars and Venus so different from the Earth?

Series title

Behind the Earth

Reference

3365

Duration

00:04:00

Production year

2008

Versions

SD
4/3
Color
Sound

Summary

While large, relatively young volcanoes can be found on Venus, those on Mars are very old. The Earth also has many volcanoes on its surface but its great originality, compared to its two direct neighbours, lies in plate tectonics. Why are Mars and Venus so geologically different? How can we explain why the red planet's magnetic field quickly went out? What were the consequences on its evolution?
Francis Albarède, a geochemist at the Earth Sciences Laboratory in Lyon, explains.

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CNRS Images,

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