Scientists say that a rock collision 'twice as big as Earth' pushed Uranus onto its side

[TruthTheOnlyDefense]

© Durham University via AP: Jacob A. Kegerreis Simulation of a collision between Uranus and a space object

Uranus is a lopsided oddity, the only planet to spin on its side. Scientists now think they know how it got that way: It was pushed over by a rock at least twice as big as Earth.

"Detailed computer simulations show that an enormous rock crashed into the seventh planet from the sun", said Durham University astronomy researcher Jacob Kegerreis, who presented his analysis at a large earth and space science conference this month.

"Uranus is unique in the solar system. The massive planet tilts about 90 degrees on its side, as do its five largest moons. Its magnetic field is also lopsided and doesn't go out the poles like ours does", said NASA chief scientist Jim Green.

"It also is the only planet that doesn't have its interior heat escape from the core. It has rings like Saturn, albeit faint ones," Dr Green said.

"It's very strange," said Carnegie Institution planetary scientist Scott Sheppard, who wasn't part of the research.

The computer simulations show that the collision and reshaping of Uranus — maybe enveloping some or all of the rock that hit it — happened in a matter of hours, Mr Kegerreis said.


He produced an animation showing the violent crash and its aftermath.

"It's also possible that the big object that knocked over Uranus is still lurking in the solar system too far for us to see", said Dr Green.

"It would explain some of the orbits of the planet and fit with a theory that a missing planet X is circling the sun well beyond Pluto", he said.

Dr Green said it's possible that a lot of smaller space rocks — the size of Pluto — pushed Uranus over, but Mr Kegerreis' research and Dr Sheppard point to a single huge unknown suspect.

The NASA scientist said a single impact "is the right thinking".

© NASA A size comparison between Uranus and Earth.

Uranus one of the 'least understood' planets

The collision happened 3 billion to 4 billion years ago, likely before the larger moons of Uranus formed.

Instead there was a disk of material that would eventually come together to form moons.

And when that happened, Uranus's odd tilt acted like a gravity tidal force pushing those five large moons to the same tilt, Mr Kegerreis said.

It also would have created an icy shell that kept Uranus's inner heat locked in, Mr Kegerreis said (Uranus's surface is minus 216 degrees Celsius).

Ice is central to Uranus and its neighbour Neptune.

A little more than a decade ago, NASA reclassified those two planets as "ice giants," no longer lumping them with the other large planets of the solar system, the gas giants Saturn and Jupiter.

Pluto, which is tiny, farther from the sun and not even officially a planet anymore, has been explored more than Uranus and Neptune.

They only got brief flybys by Voyager 2, the space probe that entered interstellar space last month.

Uranus and Neptune "are definitely the least understood planets," Mr Sheppard said.

But that may change. A robotic probe to one or both of those planets was high up on the last wish-list from top planetary scientists and likely will be at or near the top of the next list.

Uranus was named for the Greek god of the sky. Its name often generates juvenile humour when it is wrongly pronounced like a body part.

"No one laughs when I say Uranus," Mr Green said. "They have to mispronounce it to get the chuckles."

AP

https://www.msn.com/en-au/news/tech...anus-onto-its-side/ar-BBRmntH?ocid=spartandhp

 

[Möbius Curve]

© Durham University via AP: Jacob A. Kegerreis Simulation of a collision between Uranus and a space object

Uranus is a lopsided oddity, the only planet to spin on its side. Scientists now think they know how it got that way: It was pushed over by a rock at least twice as big as Earth.

"Detailed computer simulations show that an enormous rock crashed into the seventh planet from the sun", said Durham University astronomy researcher Jacob Kegerreis, who presented his analysis at a large earth and space science conference this month.

"Uranus is unique in the solar system. The massive planet tilts about 90 degrees on its side, as do its five largest moons. Its magnetic field is also lopsided and doesn't go out the poles like ours does", said NASA chief scientist Jim Green.

"It also is the only planet that doesn't have its interior heat escape from the core. It has rings like Saturn, albeit faint ones," Dr Green said.

"It's very strange," said Carnegie Institution planetary scientist Scott Sheppard, who wasn't part of the research.

The computer simulations show that the collision and reshaping of Uranus — maybe enveloping some or all of the rock that hit it — happened in a matter of hours, Mr Kegerreis said.


He produced an animation showing the violent crash and its aftermath.

"It's also possible that the big object that knocked over Uranus is still lurking in the solar system too far for us to see", said Dr Green.

"It would explain some of the orbits of the planet and fit with a theory that a missing planet X is circling the sun well beyond Pluto", he said.

Dr Green said it's possible that a lot of smaller space rocks — the size of Pluto — pushed Uranus over, but Mr Kegerreis' research and Dr Sheppard point to a single huge unknown suspect.

The NASA scientist said a single impact "is the right thinking".

© NASA A size comparison between Uranus and Earth.

Uranus one of the 'least understood' planets

The collision happened 3 billion to 4 billion years ago, likely before the larger moons of Uranus formed.

Instead there was a disk of material that would eventually come together to form moons.

And when that happened, Uranus's odd tilt acted like a gravity tidal force pushing those five large moons to the same tilt, Mr Kegerreis said.

It also would have created an icy shell that kept Uranus's inner heat locked in, Mr Kegerreis said (Uranus's surface is minus 216 degrees Celsius).

Ice is central to Uranus and its neighbour Neptune.

A little more than a decade ago, NASA reclassified those two planets as "ice giants," no longer lumping them with the other large planets of the solar system, the gas giants Saturn and Jupiter.

Pluto, which is tiny, farther from the sun and not even officially a planet anymore, has been explored more than Uranus and Neptune.

They only got brief flybys by Voyager 2, the space probe that entered interstellar space last month.

Uranus and Neptune "are definitely the least understood planets," Mr Sheppard said.

But that may change. A robotic probe to one or both of those planets was high up on the last wish-list from top planetary scientists and likely will be at or near the top of the next list.

Uranus was named for the Greek god of the sky. Its name often generates juvenile humour when it is wrongly pronounced like a body part.

"No one laughs when I say Uranus," Mr Green said. "They have to mispronounce it to get the chuckles."

AP

https://www.msn.com/en-au/news/tech...anus-onto-its-side/ar-BBRmntH?ocid=spartandhp

The planet which has fascinated me a lot is Jupiter. It's beauty is well beyond imagination and guess the depths, and then the most prized metallic hydrogen.

What makes me wonder is that Why NASA isn't sending humans to these planets like Neptune, Jupiter, Uranus and to the moons of Jupiter like Europa, Callisto or the icy moon of Saturn: Enceladus? These peoples CAN expedite the information as per human perception as desperately needed on planet Earth. I am sure, more peoples will be willing to volunteer for these journeys to the edge of universe.

 

[Dash]

What makes me wonder is that Why NASA isn't sending humans to these planets like Neptune, Jupiter,

You can never land a human on a gas giant like Jupiter.