Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Moon Has Iron Core, Lunar-Rock Study Says
National Geographic News ^ | January 11, 2007 | Brian Handwerk

Posted on 12/06/2008 8:51:38 AM PST by SunkenCiv

Deep down, the moon may be more like Earth than scientists ever thought. A new moon-rock study suggests the satellite has an iron core... The moon's core could be a clue to its ancient origins, which have long puzzled astronomers. "Our moon is too big to be a moon," Taylor said. "It's huge compared to the moons we see around other planets, so it has always been suspected that there was something strange in its origin." ...Rock samples from NASA's Apollo 15 and Apollo 17 moon missions of the early 1970s have now shed more light on the moon's origins, according to Taylor and colleagues' study, to be published in the tomorrow's issue of the journal Science. The group studied a type of lunar rock called mare basalt, which is believed to have been created deep in the moon's mantle and have retained signatures of that region. Mare basalt hails from vast, dark, flat areas of the moon's surface called mares. It is dense, dark gray, and likely formed from cooled magma. The moon rocks suggest that the lunar mantle is very low in elements that bond easily with iron, such as gold and platinum -- like Earth's mantle, but with even lower levels of those elements... "We must have had a core form [in the moon] to have [iron bonding] elements at the [low] levels we see now," Taylor said. "That's the same thing that happened on Earth, Mars, Venus, and Mercury -- the terrestrial planets."

(Excerpt) Read more at news.nationalgeographic.com ...


TOPICS: Astronomy; Science
KEYWORDS: canterbury; catastrophism; jmarvinherndon; lunarcapture; lunarorigin; mars; mercury; moon; themoon; thomasvanflandern; tvf; vafirsoff; venus
How did the moon form? The "big whack" theory suggests that a Mars-size object slammed into the hot early Earth. The debris that was ejected went into Earth's orbit and gradually came together, forming the moon, the widely accepted theory says. A new lunar-rock study suggests that the moon's insides are a lot like Earth's -- new evidence that the theory of the big whack is on the right track. [Illustration courtesy NASA]
Moon Has Iron Core, Lunar-Rock Study Says

1 posted on 12/06/2008 8:51:39 AM PST by SunkenCiv
[ Post Reply | Private Reply | View Replies]

New evidence for the Moon’s soft middle
New Scientist | 14 February 2002 | Will Knight
Posted on 12/27/2004 2:29:35 PM PST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1309193/posts


2 posted on 12/06/2008 8:52:21 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 1 | View Replies]

Moon Has Iron Core site:freerepublic.com
Google
lunar Core site:freerepublic.com
Google

3 posted on 12/06/2008 8:52:23 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aristotleman; Avoiding_Sulla; BBell; BenLurkin; ...
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic ·

4 posted on 12/06/2008 8:52:27 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 1 | View Replies]

In the shadow of the Moon
New Scientist | 30 January 1999 | editors
Posted on 08/31/2004 8:42:25 AM PDT by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1203912/posts

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


5 posted on 12/06/2008 8:53:29 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 2 | View Replies]

To: SunkenCiv

“It’s huge compared to the moons we see around other planets, so it has always been suspected that there was something strange in its origin.”

“Strange in its origin?” That’s because it was created.


6 posted on 12/06/2008 8:56:08 AM PST by Keli Kilohana (Editor, ZARR CHASM CHRONICAL [sic], Sore, WV)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv

I must have been out of town that weekend.


7 posted on 12/06/2008 8:59:03 AM PST by Wally_Kalbacken
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv

Bush’s fault!


8 posted on 12/06/2008 9:00:25 AM PST by Drango (A liberal's compassion is limited only by the size of someone else's wallet.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv

I knew an ole chic once that had a an iron core. Cold.


9 posted on 12/06/2008 9:03:09 AM PST by Dallas59 (Not My President)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv

That the moon has a small iron core has been known for a long time.


10 posted on 12/06/2008 9:07:41 AM PST by Spirochete
[ Post Reply | Private Reply | To 2 | View Replies]

To: SunkenCiv

bump


11 posted on 12/06/2008 9:08:55 AM PST by Captain Beyond (The Hammer of the gods! (Just a cool line from a Led Zep song))
[ Post Reply | Private Reply | To 1 | View Replies]

To: Keli Kilohana

whatever or whomever made our earth/moon system, its gravitational pull is what keeps our core molten and thus maintains our van allen belt which protects us from solar radiation.


12 posted on 12/06/2008 9:10:38 AM PST by Vaquero ( "an armed society is a polite society" Robert A. Heinlein)
[ Post Reply | Private Reply | To 6 | View Replies]

To: SunkenCiv

Chewy caramel center bump.


13 posted on 12/06/2008 9:11:31 AM PST by Darksheare (Admin Moderator: Something like a GRUE... on performance enhancing substances.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv
created deep in the moon's mantle

I wasn't aware that the moon had volcanoes?

14 posted on 12/06/2008 9:19:27 AM PST by John123 (The US may be going down the drain, but everyone else will drown first...)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Keli Kilohana
Correct. The moon was created - by God. He created it to protect the Earth from impact by meteors. Imagine if all those impact craters visible on the surface of the moon were on the surface of the Earth.
15 posted on 12/06/2008 9:20:16 AM PST by quadrant (1o)
[ Post Reply | Private Reply | To 6 | View Replies]

To: Wally_Kalbacken

Nice try, but we all know you were drivin’.


16 posted on 12/06/2008 9:30:09 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 7 | View Replies]

Huge Impact Crater Uncovered in Canadian Forest
National Geographic News | November 25, 2008 | John Roach
Posted on 11/28/2008 7:56:19 PM PST by SunkenCiv
http://www.freerepublic.com/focus/f-chat/2139853/posts

Lasers Uncover Craters
ScienceNOW Daily News | 1 December 2008 | Phil Berardelli
Posted on 12/03/2008 8:30:16 PM PST by neverdem
http://www.freerepublic.com/focus/f-news/2142556/posts


17 posted on 12/06/2008 9:32:12 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 15 | View Replies]

To: SunkenCiv

Cool.


18 posted on 12/06/2008 9:33:15 AM PST by GOP Poet
[ Post Reply | Private Reply | To 1 | View Replies]

To: quadrant

Say what?


19 posted on 12/06/2008 9:35:17 AM PST by MilspecRob (Most people don't act stupid, they really are.)
[ Post Reply | Private Reply | To 15 | View Replies]

To: John123

At one time, the moon’s craters were all attributed to volcanism. That was laid to rest as a consequence of the Apollo mission astronauts who sampled, examined, and photographed the lunar surface. The volcanic explanation made some sense, but was basically an alibi against impact. The so-called “Late Heavy Bombardment” is ascribed to a 200 million year period beginning 4 billion years ago, putting it waaaay back in time, and farrrrr, farrrrr away from our own.

Scientists unearth ancient impact’s secrets
A giant meteorite struck Earth 1.8 billion years ago, creating Sudbury Basin.
What does this event tell us about early Earth?
by Mark Jirsa (December issue)
http://www.astronomy.com/asy/default.aspx?c=i&id=462


20 posted on 12/06/2008 9:39:16 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 14 | View Replies]

To: SunkenCiv
"Big whack"

I got a few of those from my dad when I was a kid.

21 posted on 12/06/2008 9:39:20 AM PST by LiberConservative
[ Post Reply | Private Reply | To 1 | View Replies]

sudbury impact
Google

22 posted on 12/06/2008 9:39:45 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 20 | View Replies]

To: MilspecRob

:’) And yet...

“during the 200-million-year period of the late heavy bombardment, Earth suffered over 22,000 impact craters larger than 20 km, about 40 impact basins larger than 1,000 km, and several continent-sized, 5,000-km basins.”

http://www.daviddarling.info/encyclopedia/L/late_heavy_bombardment.html


23 posted on 12/06/2008 9:41:19 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 19 | View Replies]

lunar core
Google

24 posted on 12/06/2008 9:43:21 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 10 | View Replies]

To: GOP Poet

Thanks.


25 posted on 12/06/2008 9:44:17 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 18 | View Replies]

To: SunkenCiv
New evidence for the Moon’s soft middle

Which brings up the question:

How many licks does it take to get to the mantle (tootsie roll) center of the moon ?
26 posted on 12/06/2008 9:44:38 AM PST by RedMonqey (Embracing my "Inner Redneck")
[ Post Reply | Private Reply | To 2 | View Replies]

To: MilspecRob
As I understand it the moon acts as a magnet; that is, its size and composition “magnet” attracting meteors that otherwise would crash into the earth.
27 posted on 12/06/2008 9:51:18 AM PST by quadrant (1o)
[ Post Reply | Private Reply | To 19 | View Replies]

To: RedMonqey

Depends on the size of the tongue, and whether or not it’s a tongue of flame from an impact. :’)


28 posted on 12/06/2008 10:25:09 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 26 | View Replies]

To: SunkenCiv

HeeHee. I suppose so.....


29 posted on 12/06/2008 11:26:53 AM PST by RedMonqey (Embracing my "Inner Redneck")
[ Post Reply | Private Reply | To 28 | View Replies]

To: quadrant

It doesn’t.


30 posted on 12/06/2008 11:35:40 AM PST by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile finally updated Saturday, December 6, 2008 !!!)
[ Post Reply | Private Reply | To 27 | View Replies]

To: quadrant

Imagine if all those impact craters visible on the surface of the moon were on the surface of the Earth.


If earth had no air, water, or tectonic action, there would be just as many craters.


31 posted on 12/06/2008 5:11:09 PM PST by Atlas Sneezed (Guns don't kill people. Criminals and the governments that create them kill people.)
[ Post Reply | Private Reply | To 15 | View Replies]

an update of sorts, courtesy of Fred Nerks:
new gravity map of the Earth

new gravity map of the Earth

32 posted on 10/16/2010 7:50:43 PM PDT by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
[ Post Reply | Private Reply | To 1 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson