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Yet another indication that Earth and Mars formed in the inner Solar System is that they have the same deuterium to hydrogen ratios. Primordial water trapped in 4.55 billion years old (0.017 bn years after Earth formation) lava from the deep mantle has been compared with Martian meteorites. The ratio should increase further out in the Solar System. 10 ...

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I'm going to say no, for a few reasons, but if anyone wants to give a more detailed answer, feel free. 1) Planets and moons that form inside the frost-line have much less water and other ices than those that form outside. Mars likely once had water and oceans but if it had formed outside the frost-line it should have a lot more water and a lower density. ...

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Would earth go the same way as Mars by first losing its magnetic field followed by its atmosphere as its core solidifies and cools down ? We don't know. The current popular belief is the Sun will engulf it long before that. It is merely a hypothesis, not a theory. At what rate is the earth's core cooling down?. According to today's set of ...

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At what rate is the earth's core cooling down? The inner core is cooling at the rate of around $55^{\circ} C$ every billion years. Would earth go the same way as Mars by first losing its magnetic field followed by its atmosphere as its core solidifies and cools down ? Given enough time, yes; But earth is constantly producing heat though multiple ...

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