If there had been dinosaurs on Mars, they would have had a hard time. The scene would have taken place 3.4 billion years ago, when the red planet was still partly blue. A wandering asteroid rushes to the surface. It plunged into the waters of the Martian Sea and then formed an underwater crater, causing a huge tsunami with gigantic waves that submerged the land well beyond the coast and carried tons of debris that can be found today in some areas of Mars. Where the Viking 1 and Pathfinder probes landed, some intriguing observations of which have just been explained by a study published in the journal Scientific Reports.
When Mars had an ocean
In this very distant past, at the dawn of the solar system, Mars would have had an ocean, several recent studies confirm this. The sea in question was equivalent in volume to the Arctic Ocean. Although there may have been small seas, lakes and rivers, the ocean, on the other hand, was mainly in the Northern Hemisphere and occupied about 19% of the planet’s total surface – by comparison, the Atlantic Ocean represents 17% of the Earth’s surface. This sea had trenches more than a mile deep in places, which would not have prevented it from evaporating into space, in the same way as much of the Martian atmosphere.
Will we (finally) find traces of life on Mars?
The race car that crashed on this planet
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