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The Moon WASN'T formed with one giant impact but had a bombardment birth after 20 moonlets hit...
Daily Mail ^ | January 9 2017 | AFP

Posted on 03/18/2018 6:36:56 PM PDT by SunkenCiv

In such a scenario, scientists expect that about a fifth of the Moon's material would have come from Earth and the rest from the impacting body. The Moon, our planet's constant companion for some 4.5 billion years, may have been forged by a rash of smaller bodies smashing into an embryonic Earth, researchers have revealed. A bombardment birth would explain a major inconsistency in the prevailing hypothesis that the Moon splintered off in a single, giant impact between Earth and a Mars-sized celestial body. In such a scenario, scientists expect that about a fifth of the Moon's material would have come from Earth and the rest from the impacting body. Multiple hits would have excavated more Earth material than a single one, which means the moonlets would more closely resemble our planet's composition, said the study authors. Yet, the makeup of the Earth and the Moon are near identical -- an improbability that has long perplexed backers of the single-impact hypothesis... Every collision would have formed a disk of debris around the proto-Earth which would, in turn, clump together to form a 'moonlet', they found. Around 20 moonlets would eventually coalesce to form the Moon.

(Excerpt) Read more at dailymail.co.uk ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; catastrophism; lunarimpact; lunarorigin; moon; science; themoon
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To: Fungi

Correct a fool, be called foolish.


41 posted on 03/18/2018 9:43:21 PM PDT by Fungi
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To: Dagnabitt

I would say NO, but I know Someone who was.


42 posted on 03/18/2018 9:48:44 PM PDT by taxesareforever (Islam is an ideology. It is NOT a religion.)
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To: SunkenCiv

It seems the moon could have formed like the Earth formed. The Moon could have aggregated into what it is and gotten close enough for Earth’s gravity to capture it. I don’t understand why a grand collision had to necessarily take place to produce the Moon.


43 posted on 03/18/2018 10:04:51 PM PDT by plain talk
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To: SunkenCiv

Had the moon been captured, why are we losing it? Well, after zillions of meteoric impacts, I guess the moon IS losing weight. (And so is Earth).


44 posted on 03/18/2018 11:05:31 PM PDT by Does so (Let's make the word Mohammedism--adding it to other ISMs...)
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To: beethovenfan

I hope it was Boston Cream doughnut!


45 posted on 03/18/2018 11:24:32 PM PDT by jmacusa ("Made it Ma, top of the world!'')
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To: granite
Some of the water got here on comets and asteroids. For some million or so years after the Earth began to form it rained for about a few thousand years.
46 posted on 03/18/2018 11:26:38 PM PDT by jmacusa ("Made it Ma, top of the world!'')
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To: plain talk
...It seems the moon could have formed like the Earth formed. The Moon could have aggregated into what it is and gotten close enough for Earth’s gravity to capture it. I don’t understand why a grand collision had to necessarily take place to produce the Moon.

The problem is that two independent bodies can not "capture" each other. There is too much momentum and kinetic energy. Unless there is a collision, they will inevitably separate, essentially fly right past each other. If there is a third body, under exactly the right conditions, it may gain momentum and allow two bodies to be mutually captured, but this is very improbable.

OTOH, the earth-moon system is essentially a binary planet. Stand back and look at the whole forest instead of the individual trees. Binary stars are well known and actually very common. Why the earth-moon system could not form by a variation on the same mechanisms that form binary stars is the question we should be asking.

47 posted on 03/19/2018 12:19:45 AM PDT by CurlyDave
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To: Does so
There's a tidal transfer of momentum between the Earth and Moon which over time has slowed down the rotation rate of the Earth. Due to the smaller mass of the Moon (1% of the Earth's), the rotation of the Moon was simlarly transferred to the Earth, the Moon just finished first and now shows the same face. Over enough time, the Earth will either push the Moon away (that'll be a bad crazy day) or will wind up showing the same face to the Moon, as the Moon does to the Earth right now.

48 posted on 03/19/2018 6:30:52 AM PDT by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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To: plain talk; CurlyDave
Some selections from the lunarorigin keyword, out of the FRchives:

49 posted on 03/19/2018 6:57:51 AM PDT by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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To: A Navy Vet
The term settled science isn't scientific, it's political. The problem for some people is that science is a method rather than a body of knowledge. When new information becomes available, previous ideas have to be amended or abandoned. By contrast, any new information has to be rejected by people who think they already know everything.

Copernicus' borrowed idea that the Sun was the center of the Universe isn't actually correct -- our Sun isn't even the center of the galaxy, something known thanks to new information. Newton believed that acceleration could go on indefinitely, but this was thrown out due to later observations, and Einstein's development of relativity.

Newton and others were also wrong about orbits -- Kepler was wrong at first, but realized that orbits are elliptical, with some more closley approaching circularity than others. That discovery was due to Tycho Brahe's and Kepler's own observations of the motion of Mars.

50 posted on 03/19/2018 7:22:21 AM PDT by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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To: CurlyDave

“The problem is that two independent bodies can not “capture” each other. “

Not sure of that. Some believe the moons on mars are captured asteroids. Of course this is all speculation. No one knows.


51 posted on 03/19/2018 9:10:28 AM PDT by plain talk
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To: SunkenCiv

How do they know the moon has been our satellite for some 4.5 billion years when they know there is no historical evidence for this,but some saying otherwise?


52 posted on 03/19/2018 11:04:05 AM PDT by oldtech
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To: SunkenCiv

How do they know the moon has been our satellite for some 4.5 billion years when they know there is no historical evidence for this,but some saying otherwise?


53 posted on 03/19/2018 11:08:08 AM PDT by oldtech
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To: oldtech
I'm willing to entertain that notion.

54 posted on 03/19/2018 12:28:21 PM PDT by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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To: plain talk; CurlyDave

Jupiter’s got dozens of moons, and most of them are captures. They are also moving in retrograde orbits, which is often considered diagnostic of capture. Capture of a smaller body can also be accomplished by repeated encounters, as described briefly here by the late V.A. Firsoff:

http://www.freerepublic.com/focus/chat/1234919/posts?page=4#4


55 posted on 03/19/2018 12:39:23 PM PDT by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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To: plain talk; CurlyDave

Whoops, the retrograde moons are the ones I was talking about overall — the four Galilean moons and other inner moons are in prograde orbit.


56 posted on 03/19/2018 12:52:39 PM PDT by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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To: jmacusa
Some of the water got here on comets and asteroids. For some million or so years after the Earth began to form it rained for about a few thousand years.

I am wondering if it is still coming into the atmosphere, thus explaining rising sea levels?

57 posted on 03/19/2018 1:30:35 PM PDT by granite (The heart of the wise inclines to the right, but the heart of the fool to the left.Ecclesiastes 10:2)
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To: granite

Water is the most abundant element on the planet. There is every argument for the rising an lowering of sea levels but if there is any rise in sea levels from what I know it’s imperceptible at best. It’s not what the climate change doomsday sayers go on about , positing that it happens virtually in a matter of months.


58 posted on 03/19/2018 2:13:44 PM PDT by jmacusa ("Made it Ma, top of the world!'')
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To: SunkenCiv

Thanks for the info!


59 posted on 03/19/2018 2:36:03 PM PDT by plain talk
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To: jmacusa
...Water is the most abundant element on the planet...

Water is not even an element.

And, it is not the most abundant compound by any measure except surface area coverage.

Back to chemistry class for you.

60 posted on 03/19/2018 4:01:20 PM PDT by CurlyDave
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