http://www.gizmodo.com.au/2018/07/did-something-massive-smash-into-uranus/

Two views of Uranus.
You might be aware of one of Uranus' complexities: It spins on its side, and its moons orbit on that same rotated plane. New evidence strengthens the case that Uranus was smashed in a giant collision, resulting in its sideways orientation to its orbital plane and perhaps explaining some of the planet's other mysteries.

A new paper performs a series of simulations on Uranus early in its history, taking note of what an early impact may have done to its rotation rate, atmosphere and internal structure. The impact could have left a clear signature still visible inside the planet we see today.

Uranus really is strange. Not only does it rotate on an axis that sits at a 98-degree angle to its orbital plane, but, unlike the other giant planets, it doesn't appear to release more heat than it receives from the Sun. Its magnetic field, too, appears warped compared to the Earth's.

An impact could perhaps help explain some of these strange traits.

Scientists have been simulating giant impacts into Uranus since the early 1990s, according to the new paper published in the Astrophysical Journal.

This time around, researchers built a new simulation with the newest and best available data of the planet's composition. This allowed them to model how a giant impactor, perhaps one to three times the mass of Earth, would have deposited "material and energy inside Uranus", and how much debris would be left over from which moons could form.

"This study provides some great new insights into what might have happened all those billions of years ago, with material left over from the impact possibly even serving to trap some of that heat inside," Leigh Fletcher, Royal Society Research Fellow at the University of Leicester, told Gizmodo.

But this is just a simulation, and like we always say: All models are flawed, but some are interesting. Models can't tell us exactly what happened; it will take a lot more data to fully understand Uranus' story.

"Of course, what we really need next is an ambitious robotic mission to explore Uranus and its diverse satellite system," said Fletcher. "Gravitational, atmospheric, and magnetic field mapping, following what we've done at Jupiter with Juno, and at Saturn with Cassini, could provide some new clues to better constrain these models, by unlocking the secrets of an ice giant interior for the first time."

I've always suspected as much.
I wonder if anyone has looked at the Oort Cloud density in the vicinity of "Ur A Nus" to see if it has a wider clear path than other planets in the outer solar system?

Venus is the only other planet that doesn't spin in a counter-clockwise rotation as seen from above the north pole. The entire solar system spins counter-clockwise too.

I think both Venus and 'Ur a nus' have had their initial rotation changed by impacts. The impact on Venus reversed rotation without changing north orientation but the 'Ur a nus' impact hit at such an angle to knock the planet on its side.

I also suspect 'ur a nus' is still slowly continuing to flip, we just haven't viewed it with detail long enough to determine how much it is changing.

The heat radiation is very interesting to me.
What could cause that?
Is it possible that some exotic material within the planet is absorbing heat?
It would be interesting to see data on the near space temperatures near 'Ur a nus' to see if it is colder than the space in the rest of the solar system?



Perhaps it is its rotational axis that allows the planet to absorb heat from the Sun more efficiently? Could the planet's interior be hotter than other gas giants?

I wonder if centripetal forces play a larger role in heat radiation?
We already know cloud cover insulates heat. We already know cloud composition also changes how much insulation is happening. "Greenhouse Effect" is one example.
'Ur a nus' day is 17h 14m, that's pretty fast for such a large planet.
Being a gas giant, might there be layers of different density clouds spinning at different rates causing the heat entering the pole to be locked inside?
I suspect the interior to have a minute solid core with a high temperature plasma outer core that slowly cools outward.
In that it is absorbing but not radiating makes Uranus likely to explode sometime in its future. I suspect it won't become a star because it doesn't have the mass but it might explode with enough force to change the outer solar system dynamics enough to initiate another period of bombardment thru the system. Its shockwave could change the dynamics of asteroids and comets and its gravitation absence might change the planetary orbital paths.

as far as the coolness of it, I was thinking that maybe it's more if a gas giant than the rest if the big planets, meaning it might not has a solid core, maybe more fluids than the rest...

I find it a bit odd they didn't mention the disturbance in it's orbit either, something that shows another big planet could be out there..

SOOOOOO..what you're saying is Uranus has gas... ...


sorry guys I couldn't help myself I haven't grown up yet..

Uranus is huge...

something massive struck Uranus?

__________________________________________________________________

It out..and yes, they had some laughs at the emergency room after I left, I'm sure.

lol...I was reading the headline after I typed it, and it looked like a gay porno post...that's why I added the qualifier "the planet" at the end...

But as long as we can see those things buzzing around Uranus, we should be fine...

This is why I suggested plasma. It might contain some exotic form of high mass plasma instead of an iron core.
Jupiter, Saturn and Neptune radiate heat.
Its obvious there is something different going on inside "Ur a nus".

We know there are moons. We know their dynamics and their size but do we know their composition? What are their mass densities and how do those densities relate to the planet's mass density?

One way to determine the effects would be to calculate an orbit for a known device and place it in that specific orbit and see if it degrades or flies off.
We also must realize that the Voyager mission that used this planet for gravity assist had the expected trajectory. Or did it? At that distance, at that speed, did it follow the exact expected trajectory or were corrections needed? If we were not measuring, we may have just made allowances for deviation. Automatically corrected instead of examining that specific result.
The only way to be sure is to send a mission there to take specific measurements on these specific dynamics.

It would be a one-way mission but Uranus is only meant to be a one-way street.

I wonder if they could tell if there's a solid core from the tidal effects on the atmosphere from the moons? If it's all gas, liquid, or plasma, would the tidal effects be different?

Oh yeah? Tell that to someone who has had a colonoscopy.



















Wait. What was the topic again?

Best sentence in the article..

Scientists have been simulating giant impacts into Uranus since the early 1990s...

Uranus...

Been there, forgot about it with therapy, thanx alot!
Now I'm gunna need another shrink appt.

Have you tried to learned about all planets? Witch one is your favorite?
The fascination of life in one or more than one is a very good and busy work for specialists.

all the planets are fascinating, I don't have a favorite besides earth....Mars is probably the only planet besides earth that could support life, most likely underground tho...there's a few moons that are higher probabilities to support life, but it's only speculation till we go there and see it...

I knew about life on Mars, Moe. Thank you. I believe it would be a very expensive trip, lOnly the rich people can afford. Just my opinion. Thank you for posting.

There's a lot of mysteries surrounding Uranus..

Never rent from Uranus Hertz.