ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Knowledge about the outermost portions of galaxies is limited owing to the small amount of light coming from them. It is known that in many cases atomic hydrogen (H i) extends well beyond the optical radius. In the centres of galaxies, however, molecular hydrogen (H2) ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/nature03054