Gentendo
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Gentendo

A Forum For Both Sega and Nintendo Fans
 
HomePortalSearchLatest imagesAtmosphere of the Moon Genten20RegisterLog in
Welcome, Guest.
Not registered? Sign up and become a part of our community today!

 

 Atmosphere of the Moon

Go down 
AuthorMessage
lunamoonfang




Posts : 30
Registration date : 2010-12-03

Atmosphere of the Moon Empty
PostSubject: Atmosphere of the Moon   Atmosphere of the Moon EmptyWed Dec 15, 2010 1:01 pm

Atmosphere of the Moon

The Moon has an atmosphere so tenuous as to be nearly vacuum, with a total mass of less than 10 metric tons.[71] The surface pressure of this small mass is around 3 × 10−15 atm (0.3 nPa); it varies with the lunar day. Its sources include outgassing and sputtering, the release of atoms from the bombardment of lunar soil by solar wind ions.[5][72] Elements that have been detected include sodium and potassium, produced by sputtering, which are also found in the atmospheres of Mercury and Io; helium-4 from the solar wind; and argon-40, radon-222, and polonium-210, outgassed after their creation by radioactive decay within the crust and mantle.[73][74] The absence of such neutral species (atoms or molecules) as oxygen, nitrogen, carbon, hydrogen and magnesium, which are present in the regolith, is not understood.[73] Water vapour has been detected by Chandrayaan-1 and found to vary with latitude, with a maximum at ~60–70 degrees; it is possibly generated from the sublimation of water ice in the regolith.[75] These gases can either return into the regolith due to the Moon's gravity, or be lost to space: either through solar radiation pressure, or if they are ionised, by being swept away by the solar wind's magnetic field.[73]
____________
Tapware
living will
Back to top Go down
 
Atmosphere of the Moon
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Gentendo :: Other :: General Discussion-
Jump to: