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The Giant Impact Theory  (Source: starchild.gsfc.nasa.gov)
Two new studies attempt to prove the Giant Impact Theory in different ways

Two different studies say they've found evidence supporting the theory that the moon was created from a collision between Earth and a Mars-sized body.

The Giant Impact Theory, which was proposed back in 1975, suggests that the early Earth and a Mars-sized planet called Theia collided with one another. This completely obliterated Theia, and its composition created a ring around Earth and eventually came together to create the moon.

While scientists have been able to explain how this event occurred, one major thing didn't add up: the composition of the moon.

Scientists long believed that for this theory to be true, the moon would have to be composed mainly of Theia's elements. Moon rocks from that were brought to Earth were studied, and surprisingly, they had the same types and amounts of elements that the Earth had, including titanium, silicon and oxygen. This didn't make sense, and has left the theory wide open for the last 30+ years.

However, scientists from Washington University in St. Louis managed to measure a small excess of a heavier variant of zinc in moon rocks from that were brought to Earth in the 1970s. They believe the excess is due to heavier zinc atoms condensing out of the collision's cloud faster than the lighter zinc atoms, and the vapor that remained escaped before it condensed.

This bit of sorting by mass is called isotopic fractionation, and it's what scientists have been looking for all along. This shows that the moon rocks were depleted of easily evaporated elements called volatiles, and a large collision could explain this depletion while other theories can't.

"The magnitude of the fractionation we measured in lunar rocks is 10 times larger than what we see in terrestrial and Martian rocks," said Frédéric Moynier, PhD, from Washington University in St. Louis. "So it's an important difference."

But the Washington University team isn't the only one to bring new evidence to the table. Robin Canup, a planetary scientist from the Southwest Research Institute Colorado, used Harvard scientists' findings to create a theory of her own related to the collision.

According to the Harvard team, which used computer simulations to create its theory, ancient Earth had to have been spinning too fast for today's 24-hour rotation. They suggested that early Earth and a body half the size of Mars could have collided where both were obliterated and combined elements to create both the moon and Earth's heavy iron core/lighter rock layers.

At a later point, Earth's rotation could have slowed due to the moon and sun aligning in a way that changed Earth's orbit.

Canup used the idea that Earth's rotation was slowed and came up with the theory that two bodies similar in size collided at a slow speed, and their materials merged to create the Earth and moon.

Source: Science Daily



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RE: I did it
By hiscross on 10/21/2012 4:48:43 PM , Rating: 1
BTW: I made you. Do you wish I change my mind, like right now?


RE: I did it
By Motoman on 10/21/2012 5:02:15 PM , Rating: 1
Go ahead and try. I'll wait.

BTW: nice "Christian" attitude there, loser. XD


RE: I did it
By FITCamaro on 10/22/2012 7:26:54 AM , Rating: 3
Says the guy throwing out cuss words like they're on sale.

And God doesn't have to explain himself to you or anyone else.

BTW:
http://www.thedailybeast.com/newsweek/2012/10/07/p...


RE: I did it
By FITCamaro on 10/22/2012 7:30:53 AM , Rating: 2
And blaming God for the failures of man is like Obama blaming Mitt Romney for there being poor people in this country.


RE: I did it
By Motoman on 10/22/2012 9:07:30 AM , Rating: 2
"God" is a failure of man.


RE: I did it
By Florinator on 10/22/2012 3:45:57 PM , Rating: 2
One of my most favorites quotes ever, belongs to Gore Vidal:

The great unmentionable evil at the center of our culture is monotheism. From a barbaric Bronze Age text known as the Old Testament, three anti-human religions have evolved — Judaism, Christianity, Islam. These are sky-god religions. They are, literally, patriarchal — God is the Omnipotent Father — hence the loathing of women for 2,000 years in those countries afflicted by the sky-god and his earthly male delegates. The sky-god is a jealous god, of course. He requires total obedience from everyone on earth, as he is in place not for just one tribe but for all creation. Those who would reject him must be converted or killed for their own good. Ultimately, totalitarianism is the only sort of politics that can truly serve the sky-god's purpose.


RE: I did it
By FITCamaro on 10/22/2012 4:47:15 PM , Rating: 2
If you get women being "loathed" from the Bible, then you're illiterate.

Husbands, love your wives, just as Christ loved the church and gave himself up for her

In this same way, husbands ought to love their wives as their own bodies. He who loves his wife loves himself.

Just because men screwed things up does not mean that God calls for women to be "loathed", subjugated, or otherwise treated poorly.

And maybe Islam calls for those who don't believe to be killed, but Christianity does not. It does call those who believe to go and spread the good word to others, but in no way does it say to force it on them. Again, there were men who tried, but that doesn't mean the Bible says it.

There are passages atheists try to quote to imply that but they all take it out of context. For instance, Deuteronomy 17.

quote:
“If there is found in your midst, in any of your [b]towns, which the Lord your God is giving you, a man or a woman who does what is evil in the sight of the Lord your God, by transgressing His covenant, 3 and has gone and served other gods and worshiped them, or the sun or the moon or any of the heavenly host, which I have not commanded, 4 and if it is told you and you have heard of it, then you shall inquire thoroughly. Behold, if it is true and the thing certain that this detestable thing has been done in Israel, 5 then you shall bring out that man or that woman who has done this evil deed to your gates, that is, the man or the woman, and you shall stone them to [c]death. 6 On the [d]evidence of two witnesses or three witnesses, he who is to die shall be put to death; he shall not be put to death on the [e]evidence of one witness. 7 The hand of the witnesses shall be first against him to put him to death, and afterward the hand of all the people. So you shall purge the evil from your midst.


Of course they usually conveniently leave out the first line which speaks to the transgression of not following the Lord's covenant with the people of Israel. Yes the Lord is a God that required obedience from his people. But those laws no longer apply since the Lord no longer requires sacrifices from his people to show obedience and belief. Christ extended God's covenant with the Jews to all people. He only asks two things. Belief in him and belief in his son.


RE: I did it
By FITCamaro on 10/22/2012 4:53:23 PM , Rating: 2
Jesus was pretty clear on the matter of whether those who follow him should execute those who sin.

"May he who is without sin cast the first stone".


RE: I did it
By Motoman on 10/22/2012 9:06:44 AM , Rating: 2
Deeply disappointed to see that you're that stupid.

Do you really need a lecture on subjective anecdotes?

So sad that humanity hasn't grown up and pulled on it's big-boy pants yet.


RE: I did it
By FITCamaro on 10/22/2012 12:32:40 PM , Rating: 2
Yes because counting on man to provide all the answers is a sign of intelligence...


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