An international group of researchers has come to the conclusion that the crater of Lomonosov, an impact crater in the northern part of Mars with a diameter of about 80 miles, can be connected to an impact that would have caused a mega-tsunami over 3 billion years ago on the red planet.
According to the most reliable theories, on Mars, in fact, billions of years ago there existed an enormous ocean that covered a good part of the northern surface of the planet. The asteroid could be impacted right in this body of water.
Precisely the large size of the crater, first of all, suggests that the impact body itself was large. Scientists believe the asteroid was similar in size to the one that struck the Yucatan peninsula 66 million years ago on Earth, an asteroid about 6 miles in diameter.
In the study, published in the Journal of Geophysical Research, the researchers then describe the evidence they believe would witness the formation of a huge tsunami due to the impact that occurred not long after the planet was formed. According to the researchers, by carefully observing the crater, it can be seen that part of the edge is missing and this can be considered a proof of the movement of a huge mass of water that has helped to wear down the edge itself.
Furthermore, the crater seems to have more or less the same depth as the ancient ocean once present on Mars. At the moment these are theoretical assumptions: there is no agreement even with regard to the presence of the enormous northern Martian ocean.
This ocean would have formed on Mars about 3.4 billion years ago and according to some theories it may have been quite long-lived while according to others the water would have remained liquid only for a few thousand years and then finally frozen and then, during hundreds of millions of years, largely dissolved in space.
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