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Scientists create most detailed map of Uranus' mysterious auroras to date 5nvklj





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Scientists create most detailed map of Uranus' mysterious auroras to date

Dragon
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Scientists create most detailed map of Uranus' mysterious auroras to date Empty Scientists create most detailed map of Uranus' mysterious auroras to date

Post by Dragon Wed Oct 20, 2021 8:48 am

Scientists have imaged the whole globe of Uranus in the infrared part of the light spectrum for the first time, hoping to shed light on the planet's mysterious auroras and weird magnetic field.

The British-led team did so during a three-day campaign that was livestreamed publicly last week for the whole world to see.

The scientists, based at the University of Leicester in the U.K., used NASA's Infrared Telescope Facility (IRTF) in Hawaii to look at the odd ice giant that orbits the sun 19 times farther away than Earth does.

Just like on Earth, auroras on Uranus are triggered by the interaction of the solar wind, the stream of charged particles emanating from the sun, with the planet's magnetic field.

But because so much is different about Uranus compared to our planet, these auroras behave very differently than the Earth's famous northern and southern polar lights.


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Scientists create most detailed map of Uranus' mysterious auroras to date 334pu7m
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Post by Dragon Wed Oct 20, 2021 8:50 am

Scientists create most detailed map of Uranus' mysterious auroras to date FACX3whaCWHDvXSQStZ4p-1024-80
(Image credit: University of Leicester)

Auroras on Uranus behave in unexpected ways.

For example, the axis around which Uranus rotates is nearly perpendicular to the sun.

That means the planet essentially rolls around the sun on its side with its poles facing the star nearly directly for an entire quarter of the planet's long year, which lasts 84 Earth years.

On top of that, Uranus' magnetic poles are not aligned with its geographical poles, like on Earth, Jupiter or Saturn, but are tilted by 60 degrees away from them.

As a result, Uranus' auroras don't light up the sky above the planet's geographical poles but at very odd places.


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Scientists create most detailed map of Uranus' mysterious auroras to date 334pu7m
Dragon
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Post by Dragon Wed Oct 20, 2021 8:51 am

Scientists create most detailed map of Uranus' mysterious auroras to date RekPjoCmBXgdaUKv3GURKF-970-80
(Image credit: University of Leicester)

Scientists made the most detailed measurements of the ice giant Uranus in the infrared part of the spectrum.


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Scientists create most detailed map of Uranus' mysterious auroras to date 334pu7m
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Post by Dragon Wed Oct 20, 2021 8:52 am



Auroras on Uranus Captured Again By Hubble


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Scientists create most detailed map of Uranus' mysterious auroras to date 334pu7m
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Scientists create most detailed map of Uranus' mysterious auroras to date Empty Re: Scientists create most detailed map of Uranus' mysterious auroras to date

Post by Dragon Wed Oct 20, 2021 8:53 am



Uranus is a planet beyond convention.

Find out why it boasts the coldest temperatures in the solar system, what phenomena caused the unique tilt of its axis, and the curious origin of the planet's name.


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Scientists create most detailed map of Uranus' mysterious auroras to date 334pu7m

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