Solar System and Planet Formation

Historic planetary instability and catastrophe. Evidence for electrical scarring on planets and moons. Electrical events in today's solar system. Electric Earth.

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Re: Another age guess for planet earth?

Unread postby dougettinger » Thu Nov 17, 2016 11:53 am

The quote below was from the CreationScience website and was presented by 'Perpetual Motion'.

perpetual motion wrote:I have no idea how they could find out about this.
Is this from another imaginative paper theory from the mainstream Mensa group.

"(Dust) particles larger than (about one 100,000th of a centimeter in diameter) form a large disk-shaped cloud that orbits the Sun between the orbits of Venus and the asteroid belt. (This cloud produces zodiacal light).Forces acting on these dust particles (called the Poynting-Robertson effect) should spiral most of them into the Sun in less than 10,000 years. Known forces and sources of replenishment cannot maintain this cloud, so the solar system is probably less than 10,000 years old)".


If this dust cloud exists now, then it must be older than 10,000 years. This dust could have been created by such events as a large number of comet tails spewing dust from one of their tails, or from such a event such as a major collision, or from plasma arc discharges such as the postulated close encounter with Mars, or the release of Saturn's plasma axial column of satellites. The solar system may be much older and some process replenished this dust. Is my thinking correct?

Dating is always problematic,
Doug Ettinger
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Re: Another age guess for planet earth?

Unread postby tholden » Sun Nov 20, 2016 3:20 pm

Best possible guess appears to be 700,000 to a couple of million years.

http://bearfabrique.org/Misc/Earths_Age.pdf
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Re: Another age guess for planet earth?

Unread postby Metryq » Mon Nov 21, 2016 4:35 am

Ted, paragraph 5 starts: "But I would view Bass’ 100M year figure as an extreme outer limit."

Should that be "Bass' 200M year figure"?
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Planet Nine

Unread postby comingfrom » Mon Apr 03, 2017 7:04 pm

With all the recent talk about Planet Nine, I thought it deserves a thread here.

Science Alert report of the progress for the search for Planet Nine.
Astronomers Have Officially Found a Candidate for Planet Nine

Their first paragraph corrects their title... they actually have four candidates for Planet Nine.
No details of these candidate objects are provided in the report.

~Paul
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Re: Planet Nine

Unread postby webolife » Wed Apr 05, 2017 5:52 pm

I have a geometric analysis similar to the Titius-Bode pattern that locates the semi-major axes and approximates the masses of the outer planets; it predicts the existence of a 3xPluto-mass object orbitally located near Pluto's aphelion. I will be quite interested to see if that shapes up!
Truth extends beyond the border of self-limiting science. Free discourse among opposing viewpoints draws the open-minded away from the darkness of inevitable bias and nearer to the light of universal reality.
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Accretion

Unread postby Roshi » Mon Aug 28, 2017 1:46 am

Stars form by the gravitational collapse of interstellar gas. Prior to collapse, this gas is mostly in the form of molecular clouds, such as the Orion Nebula. As the cloud collapses, losing potential energy, it heats up, gaining kinetic energy, and the conservation of angular momentum ensures that the cloud forms a flatted disk—the accretion disk.


The initial collapse of a solar-mass protostellar nebula takes around 100,000 years.[6][7] Every nebula begins with a certain amount of angular momentum. Gas in the central part of the nebula, with relatively low angular momentum, undergoes fast compression and forms a hot hydrostatic (non-contracting) core containing a small fraction of the mass of the original nebula. This core forms the seed of what will become a star.[6] As the collapse continues, conservation of angular momentum dictates that the rotation of the infalling envelope accelerates, which eventually forms a disk.

https://en.wikipedia.org/wiki/Accretion_(astrophysics)

What about "gas pressure"? Not one word. There isn't any when you don't need it for your theory. Gas "undergoes fast compression" and the "collapse" simply "continues". No pressure. Maybe gases experience pressure only when they are on Earth... If we believe Wikipedia, the atmosphere should simply collapse on us, and form a liquid, then a star... I don't know why that does not happen, it's a mistery.

And a question: shouldn't that dust or gas in the accretion disk - accumulate a static charge through friction?
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Re: Accretion

Unread postby Maol » Mon Aug 28, 2017 2:10 am

Galactic dust bunnies.
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Re: Accretion

Unread postby Roshi » Mon Aug 28, 2017 6:16 am

How does a planet's liquid core form? Let's skip the part about "gas" that forms stars then the stars form pieces of rock and dust and iron (needed to form planets) when they explode. If we have billions of pieces of rock, in close proximity to one another, is gravity enough to squeeze them together and melt them? Melt most of them in fact, the Earth is mostly melted material, the crust is very thin relatively:

https://en.wikipedia.org/wiki/Lithosphere

Also, how does accretion deal with the fact that gravity does not attract stuff towards a center point, but towards the place with the most mass. That's why in theory if there was a hole through the Earth, in the middle we would be weightless.
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Re: Accretion

Unread postby Maol » Mon Aug 28, 2017 12:02 pm

You would, however, still be very dense.
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