On Monday May 9, we will be able to observe a transit of Mercury in front of the Sun, that is to say, an observable passage of the planet between the Earth and our star. While this is a very rare event, two recent publications shed new light on the history of the planet closest to the Sun.

Using data gathered by the American probe MESSENGER, geologists at the University of Liege have recreated “samples” of Mercury in the laboratory in order to better understand the formation and evolution of the rocks that make up the planet. From extraction from the core to the eruption of very ancient lavas covering its surface, the magmatic history of Mercury is revealed by experiments conducted in extreme conditions. .

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