It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
There are two primary types of terrain on the Moon: the heavily cratered and very old highlands and the relatively smooth and younger maria. The maria (which comprise about 16% of the Moon's surface) are huge impact craters that were later flooded by molten lava. Most of the surface is covered with regolith, a mixture of fine dust and rocky debris produced by meteor impacts. For some unknown reason, the maria are concentrated on the near side.
With no atmosphere and no magnetic field, the Moon's surface is exposed directly to the solar wind. Over its 4 billion year lifetime many ions from the solar wind have become embedded in the Moon's regolith. Thus samples of regolith returned by the Apollo missions proved valuable in studies of the solar wind.
Originally posted by getreadyalready
The "Solar Wind" is an energy wind, not an atmospheric one. It does not "move" physical particles, so it cannot be responsible for the dunes.
Originally posted by Taymour
reply to post by greeneyedleo
Thanks.
Sure greeneye, but first I need the answer at my question.
This is very important.
You know someone that coud answer at this question?
Originally posted by pieman
Originally posted by getreadyalready
The "Solar Wind" is an energy wind, not an atmospheric one. It does not "move" physical particles, so it cannot be responsible for the dunes.
you might like to explain why comets have tails then.
OP, can you provide sources for you pictures, no offense but we only have your word that those dunes are on the Moon.
The solar wind is a stream of charged particles—a plasma—ejected from the upper atmosphere of the sun. It consists mostly of electrons and protons with energies of about 1 keV.
the Sun also emitted a steady stream of particles, a "solar corpuscular radiation" which pushed the ions.
"Moondust was a real nuisance for Apollo astronauts," adds Abbas. "It stuck to everything – spacesuits, equipment, instruments." The sharp-edged grains scratched faceplates, clogged joints, blackened surfaces and made dials all but unreadable. "The troublesome clinginess had a lot to do with moondust's electrostatic charge."
Dust on the moon is electrified, at least in part, by exposure to the solar wind. Earth is protected from the solar wind by our planet's magnetic field, but the moon has no global magnetic field to ward off charged particles from the sun. Free electrons in the solar wind interact with grains of moondust and, in effect, "charge them up."