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How Did Uranus Form?
Space.com ^ | 03/08/18 | Nola Taylor Redd,

Posted on 03/09/2018 9:43:05 AM PST by Simon Green

Although planets surround stars in the galaxy, how they form remains a subject of debate. Despite the wealth of worlds in our own solar system, scientists still aren't certain how planets are built. Currently, two theories are duking it out for the role of champion.

The first and most widely accepted, core accretion, works well with the formation of the terrestrial planets but has problems with giant planets such as Uranus. The second, the disk instability method, may account for the creation of giant planets.

"What separates the ice giants from the gas giants is their formation history: during core growth, the former never exceeded [critical mass] in a full gas disk," wrote researchers Renata Frelikh and Ruth Murray-Clay in a research paper. The core accretion model

Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula.

With the rise of the sun, the remaining material began to clump together. Small particles drew together, bound by the force of gravity, into larger particles. The solar wind swept away lighter elements, such as hydrogen and helium, from the closer regions, leaving only heavy, rocky materials to create terrestrial worlds. But farther away, the solar winds had less impact on lighter elements, allowing them to coalesce into gas giants such as Uranus. In this way, asteroids, comets, planets, and moons were created.

(Excerpt) Read more at space.com ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; catastrophism; coreaccretion; diskinstability; klingonsarounduranus; science; uranus; xplanets
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1 posted on 03/09/2018 9:43:05 AM PST by Simon Green
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To: Simon Green

In before the jokes and puns start.


2 posted on 03/09/2018 9:43:59 AM PST by The Iceman Cometh (Donald J Trump 45th President of the United States !MAGA)
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To: Simon Green

:o


3 posted on 03/09/2018 9:45:33 AM PST by READINABLUESTATE (Don't hate me because I'm sane.)
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To: Simon Green

How did my what form?
Who wants to know?


4 posted on 03/09/2018 9:45:55 AM PST by lee martell
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To: Simon Green

That’s private.


5 posted on 03/09/2018 9:45:59 AM PST by Tenacious 1
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To: Simon Green

God made it . . . next question


6 posted on 03/09/2018 9:45:59 AM PST by laweeks
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To: Simon Green

Oh, mercy me oh my!


7 posted on 03/09/2018 9:46:14 AM PST by BenLurkin (The above is not a statement of fact. It is either satire or opinion. Or both.)
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To: Simon Green

...like everyone else’s I expect.


8 posted on 03/09/2018 9:46:29 AM PST by nickedknack
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To: Simon Green

Well, that’s a deep subject...................


9 posted on 03/09/2018 9:47:17 AM PST by Red Badger (The people who call Trump a tyrant are the same people who want the president to confiscate weapons.)
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To: Simon Green

Just like the rest of me did, in the womb.


10 posted on 03/09/2018 9:47:24 AM PST by Mad Dawgg (If you're going to deny my 1st Amendment rights then I must proceed to the 2nd one...)
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To: Simon Green

I don’t know. But I’ve some understanding of how forms what comes out of it.


11 posted on 03/09/2018 9:48:18 AM PST by Ciaphas Cain (Progressives do not want to destroy us because we hate, but because we are sane.)
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To: Simon Green

It started with an explosion of methane gas...


12 posted on 03/09/2018 9:48:29 AM PST by ObozoMustGo2012 ("Be quiet... you are #fakenews!")
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To: lee martell
Who wants to know?


13 posted on 03/09/2018 9:49:26 AM PST by BenLurkin (The above is not a statement of fact. It is either satire or opinion. Or both.)
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To: Simon Green
How Did Uranus Form?

You mean this isn't about the founding of the Democrat Party???

14 posted on 03/09/2018 9:49:44 AM PST by ssaftler (Just another sunny day in the land of the fruits, nuts, flakes and illegals.)
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To: Simon Green
Uranus is one of my favourites from Gustav Holst.
15 posted on 03/09/2018 9:50:19 AM PST by real saxophonist ( YouTube + Twitter + Facebook = YouTwitFace.com)
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To: READINABLUESTATE

Did you mean this?

(*)


16 posted on 03/09/2018 9:50:27 AM PST by Alas Babylon! (Keep fighting the Left and their Fake News!)
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To: ObozoMustGo2012

best one so far


17 posted on 03/09/2018 9:50:47 AM PST by babble-on
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To: Simon Green

Oh dear


18 posted on 03/09/2018 9:50:51 AM PST by DariusBane (Liberty and Risk. Flip sides of the same coin. So how much risk will YOU accept? Vive Deo et Vives)
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To: Simon Green
during core growth, the former never exceeded [critical mass] in a full gas disk

So there was a critical mass of gas in Uranus that didn't come out? Perhaps it should have taken Maalox.

19 posted on 03/09/2018 9:51:01 AM PST by Opinionated Blowhard ("When the people find they can vote themselves money, that will herald the end of the republic.")
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To: Simon Green

https://en.m.wikipedia.org/wiki/Embryological_origins_of_the_mouth_and_anus

Lovely discussion on anal embryology


20 posted on 03/09/2018 9:52:01 AM PST by HangnJudge
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