Sublimation, the conversion of a substance from the solid to the vapour state without its becoming liquid, has been put forward as the only way that molecules detected in the planets coma could be produced from any comet.
There is no theoretical or practical way that sublimation for these molecules can occur at this distance. So what mechanic is producing this exotic comet perfume?
The ‘perfume’ of 67P/C-G
Hydrogen sulphide (H2S)
Hydrogen cyanide (HCN)
Sulphur dioxide (SO2)
Carbon disulphide (CS2)
Comet 67P perfume explanation?
Electrical stress on comets and asteroids could also cause them to break up before they get close to the sun, as they have been observed to do.
The rocky Comet 67P or any comet (not a dirty snowball) is negatively charged in deep space and then it gets closer to the positively charged electromagnetic region of our electric sun.
This starts from spluttering by protons from the solar wind (charged plasma). As the electrical stress increases the comet then produces electric arcs, producing spark machining (EDM).
In the case of the Deep Impact mission it produced a massive flash through the sudden approach of a charged object http://phys.org/news4938.html