Scientists Detect Earth-Equivalent Amount of Water on Moon | General Discussion Topics | Forum

A A A
Avatar

Please consider registering
guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —






— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Feed Topic RSS sp_TopicIcon
Scientists Detect Earth-Equivalent Amount of Water on Moon
May 27, 2011
4:04 am
Avatar
blackvault
Admin
Forum Posts: 1776
Member Since:
August 26, 2009
sp_UserOfflineSmall Offline

ScienceDaily (May 26, 2011) — There is water inside the moon -- so much, in fact, that in some places it rivals the amount of water found within Earth.

The finding from a scientific team including Brown University comes from the first-ever measurements of water in lunar melt inclusions. Those measurements show that some parts of the lunar mantle have as much water as Earth's upper mantle.

Lunar melt inclusions are tiny globules of molten rock trapped within crystals that are found in volcanic glass deposits formed during explosive eruptions. The new finding, published this week in Science Express, shows lunar magma water contents 100 times higher than previous studies have suggested.

The result is the culmination of years of investigation by the team searching for water and other volatiles in volcanic glasses returned by NASA Apollo missions in the late 1960s and early 1970s. In a paper in Nature in 2008, the same team led by Alberto Saal, associate professor of geological sciences at Brown, reported the first evidence for the presence of water and used models to estimate how much water was originally in the magmas before eruption.

"The bottom line," said Saal, an author on the Science Express paper and the principal investigator on the research grants, "is that in 2008, we said the primitive water content in the lunar magmas should be similar to the water content in lavas coming from the Earth's depleted upper mantle. Now, we have proven that is indeed the case."

The new finding got a critical assist from a Brown undergraduate student, Thomas Weinreich, who found the melt inclusions that allowed the team to measure the pre-eruption concentration of water in the magma and to estimate the amount of water in the Moon's interior. In a classic needle-in-the-haystack effort, Weinreich searched through thousands of grains from the famous high-titanium "orange soil" discovered by astronaut Harrison Schmitt during the Apollo 17 mission before finding ten that included melt inclusions.

"It just looks like a clear sample with some black specks in it," said Weinreich, the second author on the paper.

Compared with meteorites, Earth and the other inner planets of our solar system contain relatively low amounts of water and volatile elements, which were not abundant in the inner solar system during planet formation. The even lower quantities of these volatile elements found on the Moon has long been claimed as evidence that it must have formed following a high-temperature, catastrophic giant impact. But this new research shows that aspects of this theory must be reevaluated.

"Water plays a critical role in determining the tectonic behavior of planetary surfaces, the melting point of planetary interiors and the location and eruptive style of planetary volcanoes," said Erik Hauri, a geochemist with the Carnegie Institution of Washington and lead author of the study. "We can conceive of no sample type that would be more important to return to Earth than these volcanic glass samples ejected by explosive volcanism, which have been mapped not only on the moon but throughout the inner solar system."

The research team measured the water content in the inclusions using a state-of-the-art NanoSIMS 50L ion microprobe.

"In contrast to most volcanic deposits, the melt inclusions are encased in crystals that prevent the escape of water and other volatiles during eruption. These samples provide the best window we have on the amount of water in the interior of the Moon," said James Van Orman of Case Western Reserve University, a member of the science team.

The study also puts a new twist on the origin of water ice detected in craters at the lunar poles by several recent NASA missions. The ice has been attributed to comet and meteor impacts, but it is possible some of this ice could have come from the water released by eruption of lunar magmas.

Malcolm Rutherford, professor emeritus in geological sciences at Brown, also contributed to the paper. The NASA LASER and Cosmochemistry programs funded the research, with additional support provided by the NASA Lunar Science Institute (NLSI) and the NASA Astrobiology Institute.

http://www.sciencedaily.com/releases/20 ... 141400.htm

-----
John Greenewald, Jr.
The Black Vault Website Owner / Operator
http://www.theblackvault.com

May 27, 2011
6:30 am
Avatar
bionic
Member
Members
Forum Posts: 9870
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline

makes me think of
"The Martian Chronicles"
yo..people..you can post to him..he does not bite..duh..winning
<-dork
:mrgreen:

Willie Wonka quotes..
What is this Wonka, some kind of funhouse?
Why? Are you having fun?
A little nonsense now and then is relished by the wisest men.
We are the music makers, we are the dreamers of dreams

May 27, 2011
7:36 am
Avatar
blackvault
Admin
Forum Posts: 1776
Member Since:
August 26, 2009
sp_UserOfflineSmall Offline

"bionic" wrote: yo..people..you can post to him..he does not bite..duh..winning
<-dork
:mrgreen:

❓ ❓ ❓ ❓

-----
John Greenewald, Jr.
The Black Vault Website Owner / Operator
http://www.theblackvault.com

May 27, 2011
6:14 pm
Avatar
greeney2
Member
Members
Forum Posts: 10245
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline

Another great move by Obama, he killed the moon missions. 🙄

May 27, 2011
6:47 pm
Avatar
bionic
Member
Members
Forum Posts: 9870
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline

dork was aimed at me
I just noticed that people don't post to you a-lot on the public forum when you post
could just be my skewed observation, though

Willie Wonka quotes..
What is this Wonka, some kind of funhouse?
Why? Are you having fun?
A little nonsense now and then is relished by the wisest men.
We are the music makers, we are the dreamers of dreams

May 27, 2011
6:48 pm
Avatar
bionic
Member
Members
Forum Posts: 9870
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline

"greeney2" wrote: Another great move by Obama, he killed the moon missions. 🙄

on this I very much agree with you

Willie Wonka quotes..
What is this Wonka, some kind of funhouse?
Why? Are you having fun?
A little nonsense now and then is relished by the wisest men.
We are the music makers, we are the dreamers of dreams

May 27, 2011
7:00 pm
Avatar
greeney2
Member
Members
Forum Posts: 10245
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline

How anyone can want to identify themselves with JFK, and kill our space program is beyond me. Not only that the entire Kennedy clan endorsed Obama, including Teddy, and again not to carry on JFK's vision of space is beyond me. His Berlin speech was no more than a cheap attempt to copy the Greatness of both JFK and Ronald Reagan at the Berlin wall, and he didn't even come close. JFK and Reagan did it staring down the USSR in a face to face confrontation. Obama waltzed in and gave a speech to look good, JFK and Reagan were so far out of his leaque there is no comparison.

May 27, 2011
7:06 pm
Avatar
bionic
Member
Members
Forum Posts: 9870
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline

JFK and Reagan were so far out of his leaque there is no comparison.

True dat..but they were out of most other pesidents leagues

All politicians try to identify with one or the other of them..to try get that meme in voters minds.
it's a numbers game..a manipualtion game

Willie Wonka quotes..
What is this Wonka, some kind of funhouse?
Why? Are you having fun?
A little nonsense now and then is relished by the wisest men.
We are the music makers, we are the dreamers of dreams

Forum Timezone: America/Los_Angeles

Most Users Ever Online: 288

Currently Online: AD, Jon L
69 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

greeney2: 10245

bionic: 9870

Lashmar: 5289

tigger: 4576

rath: 4297

DIss0n80r: 4161

sandra: 3858

frrostedman: 3815

Wing-Zero: 3278

Tairaa: 2842

Member Stats:

Guest Posters: 2

Members: 24220

Moderators: 0

Admins: 2

Forum Stats:

Groups: 8

Forums: 31

Topics: 8760

Posts: 123594

Newest Members:

Leo jensen, ieltsballe, clive twist, John Smith, Lee Cox, lucas mula, Lindsey, Julie, Chad, Ed Phillips

Administrators: John Greenewald: 590, blackvault: 1776