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'Cataclysmic' collision shaped Uranus' evolution 5nvklj





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'Cataclysmic' collision shaped Uranus' evolution

Dragon
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'Cataclysmic' collision shaped Uranus' evolution Empty 'Cataclysmic' collision shaped Uranus' evolution

Post by Dragon Sun Jul 08, 2018 5:20 pm

Uranus was hit by a massive object roughly twice the size of Earth that caused the planet to tilt and could explain its freezing temperatures, according to new research.

Astronomers at Durham University, UK, led an international team of experts to investigate how Uranus came to be tilted on its side and what consequences a giant impact would have had on the planet's evolution.

The team ran the first high-resolution computer simulations of different massive collisions with the ice giant to try to work out how the planet evolved.

The research confirms a previous study which said that Uranus' tilted position was caused by a collision with a massive object—most likely a young proto-planet made of rock and ice—during the formation of the solar system about 4 billion years ago.

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'Cataclysmic' collision shaped Uranus' evolution 334pu7m
Dragon
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Post by Dragon Sun Jul 08, 2018 5:22 pm

'Cataclysmic' collision shaped Uranus' evolution Cataclysmicc
Credit: Jacob Kegerreis/Durham University

The collision with Uranus of a massive object twice the size of Earth that caused the planet's unusual spin, from a high-resolution simulation using over ten million particles, coloured by their internal energy.

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'Cataclysmic' collision shaped Uranus' evolution 334pu7m
Dragon
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'Cataclysmic' collision shaped Uranus' evolution Empty Re: 'Cataclysmic' collision shaped Uranus' evolution

Post by Dragon Sun Jul 08, 2018 5:23 pm



The simulations also suggested that debris from the impactor could form a thin shell near the edge of the planet's ice layer and trap the heat emanating from Uranus' core.

The trapping of this internal heat could in part help explain Uranus' extremely cold temperature of the planet's outer atmosphere (-216 degrees Celsius, -357 degrees Fahrenheit), the researchers said.


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'Cataclysmic' collision shaped Uranus' evolution 334pu7m

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