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Jupiter seems to have swallowed up the entire planet billions of years ago



Collision marks exist throughout the system.


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Bratislava. Traces of giant collisions are everywhere in the solar system. The moon is formed, Venus turns in the opposite direction, and Uranus is turned away.

The planet Jupiter was probably also affected by the ancient influence.

When the gas branch appeared, it swallowed the embryo on another planet, according to a study in the scientific journal Nature. A huge collision can explain Jupiter's strange core.

Diluted core with gases

Astronomers have long believed that the nucleus of the largest planet in the solar system is small and has a solid surface around which additional gas has accumulated.

Jupiter's nucleus had to be clearly separated from other layers. But Juno's observations suggest something else.

Jupiter's nucleus seems to be a fairly thin mass in which hydrogen and helium are mixed in addition to the rocks. This would mean that there would be no clear boundary between the core and the next layer.

In addition, in some places the core may extend up to half the radius of the gas giant. Jupiter has obviously not always had such a strange nucleus.

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According to a new study, it could have been hit 4.5 billion years ago by the embryo on another planet that was ten times more massive than Earth.

Scientists have created simulations according to which the core of Jupiter would break after a frontal collision. Gradually, however, it began to reconnect with the material that remained after the embryo on the second planet.

The gas shell also penetrates the core to its present mixed form.

The kernel would continue to this day

Simulations have also shown that the rest of the collision will continue on the planet to this day, explaining new data to Juno.

Such colossal collisions in the early solar system were not exceptional.

The Mercury core, for example, is unusually large and very rich in iron.

An explanation may also be the collision with the germ of the planet in the early history of the system, which destroyed much of Mercury's upper crust.

DOI: 10.1038 / s41586-019-1470-2


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