[NormsRevenge]

In an image released by the European Space Agency, the moon is photographed by the Rosetta spacecraft as it passes earth on Nov. 13, 2007.The European Space Agency's Rosetta spacecraft is the first mission designed to orbit and land on a comet. The mission consists of an orbiter and a lander, called Philae. The spacecraft carries 11 science experiments to complete the most detailed study of a comet ever attempted. Scientists hope that Rosetta will unlock the mysteries of how the Solar System evolved. (AP Photo/European Space Agency)

[LiteKeeper]

There is reasonable evidence to indicate the Moon did not come into existence through a collision with the Earth!

[Southack]

Not a collision...

We got our Moon via a capture.

[Sterm26]

I’ve never heard of a planet being referred to as a “vagrant”. Isn’t the PC term “homeless”?

[P8riot]

Genesis 1:14-19

14And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years:

 15And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.

 16And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also.

 17And God set them in the firmament of the heaven to give light upon the earth,

 18And to rule over the day and over the night, and to divide the light from the darkness: and God saw that it was good.

 19And the evening and the morning were the fourth day.

[NucSubs]

Good post Norm.

I believe the capture vs collision jury is still out.

[SunkenCiv]

nuts, I didn’t notice that the other one was newer, and didn’t see this one before, so I posted a bunch of stuff.

http://www.freerepublic.com/focus/chat/1929042/posts?page=13#13

Earth’s Moon is ‘cosmic rarity’
BBC News | 21 November 2007 | Paul Rincon
Posted on 11/21/2007 4:12:51 PM EST by Aristotelian
http://www.freerepublic.com/focus/chat/1929042/posts

[SunkenCiv]

I agree, the Moon was captured. Very short debate about this with RadioAstronomer:

When the Days Were Shorter
Alaska Science Forum (Article #742) | November 11, 1985 | Larry Gedney
Posted on 10/04/2004 1:31:59 PM EDT by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1234919/posts

[SunkenCiv]

Whoops! This one instead, it's older.

· join · view topics · view or post blog · bookmark · post new topic ·

[SunkenCiv]

I don't think we are capable of resolving images, visible or radio frequencies, of stars in other galaxies sufficient to discern the tell-tale wobble of even a binary star much less the wobble of a planet.

That is indeed one of the methods used, and it does work.

Such collisions would require large numbers of planetary bodies having formed by accretion with wildly differing orbital shapes... Something that the stellar accretion ring to planet theory does not support... The odds that numerous planet/moon combinations like ours were caused by collisions with cosmic interlopers, planets from outside the stellar system, are also beyond astronomic. First we would have to postulate a free roaming planet that had somehow escaped its own birth star. Then we would have to have sufficient time for this hypothetical impacting planetoid to cross interstellar distances while only moving at non-relatavistic speeds. *

Free-roaming planets have in fact been found. Also, the composition of our own gas giants suggests wandering; for that matter, the orbits of some of the moons of the gas giants are suggestive of one or more impacts, or other interactions with an interloper. While it is true that non-relativistic speeds might be involved, the times needed are nowhere near the age of the universe. Rotation of our galaxy takes something like 25 million years. :')

[Swordmaker]

The Moon... rare? PING!

If you want on or off the Electric Universe Ping List, Freepmail me.

[SunkenCiv]

re:
http://www.freerepublic.com/focus/f-chat/1929042/posts?page=34#34

Moving the convo over here.

That Astronomy article appears to be online, as a PDF:

Why is the solar system cosmically aligned?
Dragan Huterer
http://huterer.physics.lsa.umich.edu/~huterer/PLOTS/CMB_Huterer.pdf

[SunkenCiv]

Okay, this discussion has broadened out, so it's probably pingworthy. :')

[SunkenCiv]

http://www.freerepublic.com/focus/f-chat/1924617/posts?page=8#8

[onedoug]

Only about one in every 10 to 20 solar systems may harbor a similar moon.

The Moon is truly unique. It's close enough to Earth to cover the Sun's disk so that during total eclipses we can measure the Suns's gravitational bending of distant starlight consistent and confirming of General Relativity.

The Moon stabilizes the Earth's tilt which give us the seasons, and it may act too, gravitationally, to modify plate tectonics within the earth, without which, human life could not have been possible.

Combined with all the other "coincidences" which give us the life we know, is more evidence than not, for the existence of God.

[SunkenCiv]

Extrasolar Planets: Testing Models of Planet Formation -- "Roche Limit & Migration... Circularization of highly eccentric orbits with small pericenter distances: Predicts edge at twice the Roche limit, Planet-planet scattering, tidal-capture of free-floating planets... Formation of Uranus & Neptune, Problem: Standard timescale to accrete Neptune in situ at ~30 AU exceeds 4 Gyr... Our own solar system may have once contained giant planets on eccentric orbits."

[SunkenCiv]

Chinese Scientist Gives New Hypothesis on Origin of the Moon
People's Daily
Thursday, November 29, 2001

A planet collision may have helped form the Moon. This is the new hypothesis on the origin of the Moon by Huang Jinzhong, a geographer from the Seismology Bureau of Quanzhou City. Huang said two planets, between the orbits of Mars and Jupiter, collided and split some 4.6 billion years ago, and one of the fragments formed rudiments of the Moon. Huang supported his hypothesis with evidence of the Moon's internal structure and chemical components, the age of rocks on the Moon, and other geological data. A planet collision may have helped form the Moon. This is the new hypothesis on the origin of the Moon by Huang Jinzhong, a geographer from the Seismology Bureau of Quanzhou City, Fujian Province, according to latest issue of Beijing Review.

Rudiments of the Moon Comes From Fragments

In a paper submitted to the annual meeting of the China Association for Science and Technology (CAST), Huang said two planets, between the orbits of Mars and Jupiter, collided and split some 4.6 billion years ago, and one of the fragments formed rudiments of the Moon.

This rudiment Moon was a melting celestial body, circling the Sun, according to Huang. Influenced by Jupiter's gravitation, its orbit began to change. The rudiment Moon collided with the South Pole region of the Earth some 4.46 billion years ago, and rebounded from it. The rebound force and Earth's centrifugal force then caused the Moon to circle around the Earth, he said.

Evidence from Structure & Chemical Components

Huang supported his hypothesis with evidence of the Moon's internal structure and chemical components, the age of rocks on the Moon, and other geological data. Huang's hypothesis on the origin of the Moon comes from his theory of the genesis of the Solar System. Japanese geologist C. Hayaci said Huang's theory is an innovative school of thought in the field.

There have been four hypotheses on the origin of the Moon so far: First, the Moon was a fragment separated from the Earth; second, the Moon was an independent planet captured by the Earth's gravitational pull; third, both the Moon and the Earth were formed by the same cluster of celestial material; and fourth, the Moon was formed by substances sent out after a huge planetestimal collision with the Earth. Yet all of these theories are considered flawed in certain aspects.

[SunkenCiv]

YouTube - The Origin Of The Moon

[SunkenCiv]

(the main champion of impact)

Origin Of The Moon
H. Jay Melosh
http://www.lpl.arizona.edu/outreach/origin/

[SunkenCiv]

“The last big impact, which probably formed the Earth’s Moon, was the most energetic.” — Michael J. Drake, “Accretion and primary differentiation of the Earth: A personal journey”, February 7, 2000.

http://www.lpl.arizona.edu/faculty/drake_papers/Drake2000.pdf

[SunkenCiv]

a really cool image first posted on FR by NormsRevenge, topic at the pic-click.

An artist's rendering of what the environment around Pleiades star HD 23514 might look like as two planets collide. Small, rocky planets that could resemble the Earth or Mars may be forming around a star in the Pleiades star cluster, astronomers reported on Wednesday. (Gemini Observatory/Lynette R. Cook/Reuters)