Search
Latest topics
Atmosphere of the Moon
Page 1 of 1
Atmosphere of the Moon
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]
____________
build a website
green organizations directory
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]
____________
build a website
green organizations directory
lunamoonfang- pengunjung
- Posts : 118
Join date : 2010-12-07
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum
|
|
Fri Nov 25, 2011 5:36 pm by heookaika
» Sex dating in north highlands california. Sex dating in mannsville kentucky.
Thu Aug 04, 2011 11:36 pm by Guest
» Holistic And Alternative Veterinary Medicine
Thu Aug 04, 2011 7:59 am by Guest
» Fxsystems Forex Broker located offshore
Thu Aug 04, 2011 2:28 am by Guest
» прически начала 19 века
Thu Aug 04, 2011 2:26 am by Guest
» Hi, I am new here.
Wed Aug 03, 2011 8:46 pm by Guest
» This forum aid me thanks
Wed Aug 03, 2011 4:38 pm by Guest
» tramadol veterinary dose
Tue Aug 02, 2011 7:50 pm by Guest
» men and women and anal sex
Tue Aug 02, 2011 6:24 am by Guest