ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Because of the weak gravitational force of comets, neutral gas sublimated from the nucleus can escape freely from the collision-dominated inner coma. Neutral molecules in the comet are eventually ionized through processes2 such as photoioniz-ation by solar extreme-ultraviolet photons, charge ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/321299a0
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