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D-Archer Wrote:
-------------------------------------------------------
> mmm, it sounds like you have no idea what happens
> in space, or what has been reported about it over
> the years.
>
> I am done with you, this is my last reference to
> let you see how wrong you are and i quote you for
> posterity.
>
> Ianw16 said:And no asteroid has ever been seen
> to flare up

>
> Asteroid Sprouts Tails… Six of Them!:
> [www.slate.com]
>
> ---
>
> You can take the explanation of how/why this
> happened in the article and believe that, but
> photons are not massles, these are real impactors
> and they can charge up a rock in space, the
> sprouting tales is the discharge.
>
> Regards,
> Daniel


So, apart from the obvious obfuscation, let us look at these claims of Daniel's.
Firstly, protons and other ions are, indeed, not massless. They are, however, 1836 times more massive than electrons. This gives the electrons more mobility within the solar wind when they encounter an object, such as an asteroid. On the hemisphere facing the oncoming solar wind, not much is going to get charged by this process, as roughly equal numbers of both sign are going to hit it. However, on the side opposite the solar wind, it is easier for the electrons to impact. Therefore, the charging is mostly seen on that side, and is negative. On the other side you are likely to get a small + charge due to the photoelectric effect removing electrons from the surface. Neither of these charges are going to build up to the degree where there is going to be a 'discharge'. After all, the object is embedded within the solar wind, and any area that built up a substantial charge would attract particles of the opposite sign from the wind, and soon neutralise. Basic stuff, really.
Protons, and other heavier ions do cause sputtering on asteroid surfaces. This is a mechanical process, whereby the ion hits the surface and liberates atoms from the surface material. It was, in fact, measured at comet 67P early in the mission when the solar wind still had access to the surface. This doesn't last at comets though, as the outgassing volatiles eventually prevent the solar wind reaching the surface.

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Subject Views Written By Posted
Craters on Earths Moon 2372 ldennyjr 31-May-18 13:48
Perspective of Depth 407 Dr. Troglodyte 31-May-18 16:18
Re: Craters on Earths Moon 416 D-Archer 01-Jun-18 08:02
Re: Craters on Earths Moon 314 ianw16 05-Jul-18 09:36
Re: Craters on Earths Moon 320 David L 27-Jul-18 02:57
Re: Craters on Earths Moon 287 David L 27-Jul-18 03:03
Re: Craters on Earths Moon 287 D-Archer 27-Jul-18 09:29
Re: Craters on Earths Moon 284 ianw16 31-Jul-18 12:20
Re: Craters on Earths Moon 270 D-Archer 02-Aug-18 09:53
Crater formation simulation 279 Richard Fusniak 02-Aug-18 21:20
Re: Crater formation simulation 253 D-Archer 03-Aug-18 10:25
Re: Crater formation simulation 278 Richard Fusniak 04-Aug-18 07:34
Re: Crater formation simulation 252 D-Archer 04-Aug-18 08:27
Re: Crater formation simulation 251 ldennyjr 06-Aug-18 14:15
Re: Crater formation simulation 248 D-Archer 07-Aug-18 12:37
Re: Crater formation experiments 222 D-Archer 19-Aug-18 10:05
Re: Crater formation experiments 233 ianw16 23-Aug-18 13:49
Re: Crater formation experiments 220 D-Archer 24-Aug-18 08:46
Re: Crater formation experiments 224 ianw16 25-Aug-18 05:18
Re: Crater formation experiments 223 D-Archer 25-Aug-18 09:35
Re: Crater formation experiments 225 ianw16 25-Aug-18 09:44
Re: Crater formation experiments 223 D-Archer 26-Aug-18 09:07
Re: Crater formation experiments 227 ianw16 26-Aug-18 11:57
Re: Crater formation experiments 212 D-Archer 27-Aug-18 07:27
Re: Crater formation experiments 187 ianw16 27-Aug-18 12:17
Re: Crater formation experiments 189 D-Archer 27-Aug-18 13:16
Re: Crater formation experiments 193 ianw16 27-Aug-18 13:32
Re: Crater formation experiments 194 ianw16 27-Aug-18 13:48
Re: Crater formation experiments 195 ianw16 25-Aug-18 11:53
Re: Crater formation experiments 199 D-Archer 26-Aug-18 09:09
Re: Crater formation experiments 199 ianw16 26-Aug-18 12:01
Re: Crater formation experiments 194 D-Archer 27-Aug-18 07:31
Re: Crater formation experiments 195 ianw16 27-Aug-18 11:13
Re: Crater formation experiments 198 D-Archer 27-Aug-18 14:26
Re: Crater formation experiments 195 ianw16 27-Aug-18 14:32
Re: Crater formation experiments 189 D-Archer 27-Aug-18 14:45
Re: Crater formation experiments 207 ianw16 27-Aug-18 14:48
Re: Craters on Earths Moon 254 andy_mac_27 22-Sep-18 12:35
Re: Craters on Earths Moon 196 D-Archer 22-Sep-18 18:55
Re: Craters on Earths Moon 202 Lost_In_Place 22-Sep-18 23:14
Re: Craters on Earths Moon 224 D-Archer 23-Sep-18 10:25
Re: Craters on Earths Moon 210 Lost_In_Place 23-Sep-18 21:27
Re: Craters on Earths Moon 190 Eddie Larry 24-Sep-18 23:26
Re: Craters on Earths Moon 335 D-Archer 25-Sep-18 14:24


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