Abstract
The surprising detection of strong x-ray and Far-Ultraviolet (FUV) emission from comets is the direct result of charge exchange reactions of multiply-charged solar wind ions with the neutral coma of the comet. A future diagnostics use of spectral features in cometary x-ray and FUV emission is currently hampered by the lack of knowledge on one-electron transfer in collisions of multicharged ions on many-electron atoms or molecules, in particular atomic oxygen and carbon monoxide. The objective of this Comment is the identification of the most urgent missing data.
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