Chatroom
 

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Bad Astronomy and Universe Today Forum > Space and Astronomy > Astronomy
Register FAQ Members List Calendar Mark Forums Read

   

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 04-August-2005, 04:09 PM
Eroica's Avatar
Eroica Eroica is offline
Senior Member
 
Join Date: Sep 2003
Location: Dubh Linn
Posts: 3,719
Default Earth "Air" Found on the Moon

Earth "air" found on the Moon

Quote:
The Moon's soil is impregnated with nitrogen that came from Earth's atmosphere, according to Japanese scientists writing on Thursday in Nature, the weekly British science journal.
__________________
- Learn a lot teaching others.
Reply With Quote
  #2 (permalink)  
Old 04-August-2005, 04:29 PM
aurora's Avatar
aurora aurora is offline
Senior Member
 
Join Date: Sep 2003
Posts: 2,683
Default

I wonder if the way to test this theory would be to get samples from the far side of the moon (not an easy feat) and see if the percentages are less than those in the Apollo samples (which came from the near side).
Reply With Quote
  #3 (permalink)  
Old 04-August-2005, 04:41 PM
sidmel's Avatar
sidmel sidmel is offline
Senior Member
 
Join Date: Mar 2004
Location: Henderson, KY
Posts: 393
Send a message via Yahoo to sidmel
Default

Ah, to see whether the nitrogen is excited particles that escaped the Earth's atmosphere or if the samples are from the event that caused the moon to shucked off the Earth after formation?

If it's escaped particles we would assume a higher concentration on the Earth facing side, if it's consistent on both sides it's a hold over from the separation.

** Edited to add clarification
__________________
Photons have mass? I didn't even know they were Catholic.
Reply With Quote
  #4 (permalink)  
Old 04-August-2005, 04:48 PM
pghnative's Avatar
pghnative pghnative is offline
Senior Member
 
Join Date: Jul 2003
Location: New Jersey
Posts: 2,205
Default

Quote:
Originally Posted by sidmel
Ah, to see whether the nitrogen is excited particles that escaped the Earth's atmosphere or if the samples are from the event that caused the moon to shucked off the Earth after formation?

If it's escaped particles we would assume a higher concentration on the Earth facing side, if it's consistent on both sides it's a hold over from the separation.
Except the researcher's theory is that ions could only escape early in the moon-earth history, presumably before tidal locking occurred. So the escaped particles would still be uniform on both "sides". (Alway's amuses me that a sphere is described as having sides. Maybe I'm just easily amused.)
Reply With Quote
  #5 (permalink)  
Old 04-August-2005, 11:09 PM
sidmel's Avatar
sidmel sidmel is offline
Senior Member
 
Join Date: Mar 2004
Location: Henderson, KY
Posts: 393
Send a message via Yahoo to sidmel
Default

Well, technically I guess it would be the hemisphere(?) unobservable by direct line of vision from the planet Earth. But that’s such a mouthful and I with the ‘far side’ I don’t have to spell check.
__________________
Photons have mass? I didn't even know they were Catholic.
Reply With Quote
  #6 (permalink)  
Old 05-August-2005, 12:09 AM
Ara Pacis's Avatar
Ara Pacis Ara Pacis is offline
Senior Member
 
Join Date: Aug 2005
Location: between the candle and the star.
Posts: 2,115
Default

Quote:
Originally Posted by sidmel
Well, technically I guess it would be the hemisphere(?) unobservable by direct line of vision from the planet Earth. But that’s such a mouthful and I with the ‘far side’ I don’t have to spell check.
How about "visible disc"?
__________________
"What you think you thought you saw you did not see." Agent J, MiB - Manhatten Bureau
Reply With Quote
  #7 (permalink)  
Old 05-August-2005, 12:54 AM
Jorge's Avatar
Jorge Jorge is offline
Senior Member
 
Join Date: Aug 2004
Location: Belgium
Posts: 745
Send a message via MSN to Jorge Send a message via Yahoo to Jorge Send a message via Skype™ to Jorge
Default

Isn't far and near side accept as valid names?
__________________
GCS/S d(+) s+:+ a--- C++(+++)>$ W+++>$ L>+ M+>++ w++ P+>++ tv@ PS b+ DI+ G e-> h! r-- !z+

~Jorge Schrauwen
Reply With Quote
  #8 (permalink)  
Old 05-August-2005, 12:57 AM
the_shaggy_one's Avatar
the_shaggy_one the_shaggy_one is offline
Senior Member
 
Join Date: Jan 2005
Location: Minnesota
Posts: 213
Send a message via AIM to the_shaggy_one Send a message via MSN to the_shaggy_one Send a message via Yahoo to the_shaggy_one
Default

It's because it's tidally locked. How about we use the normal, commonly accepted, and correct terms, "near side" and "far side"? Or if you'd like to get technical, we can call them "hemispheres" instead of "sides"...
__________________
audentes fortuna iuvat
Reply With Quote
  #9 (permalink)  
Old 05-August-2005, 02:04 PM
pghnative's Avatar
pghnative pghnative is offline
Senior Member
 
Join Date: Jul 2003
Location: New Jersey
Posts: 2,205
Default

Quote:
Originally Posted by Jorge
Isn't far and near side accept as valid names?
Absolutely --- as mentioned above, I just get amused easily...
Reply With Quote
  #10 (permalink)  
Old 05-August-2005, 09:16 PM
Gsquare Gsquare is offline
Senior Member
 
Join Date: Jan 2002
Location: USA
Posts: 693
Default

Quote:
Originally Posted by aurora
I wonder if the way to test this theory would be to get samples from the far side of the moon (not an easy feat) and see if the percentages are less than those in the Apollo samples (which came from the near side).
That sounds reasonable.


The article states; "The Moon was formed at high temperatures, and should thus be depleted in volatile elements, including nitrogen, carbon, hydrogen and the six "noble" gases, helium, neon, argon, krypton, radon and xenon.
However, all these elements have been found in the lunar soil, which suggests that the source came from elsewhere."

It also suggests to me that the original hypothesis (that it formed at high temperatures) may be wrong.

G^2
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT. The time now is 05:24 AM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.0.0
©  2006 Bad Astronomy and Universe Today