ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[Auszug] SIR-Some ancient Babylonian, Graeco-Roman, and mediaeval texts' have sug-gested that Sirius might have been red in the past. In particular, Ptolemy (AD 150) classified Sirius as hipokkiros (reddish) with stars like Arcturus, Aldebaran, Pollux, Antares and Betelgeuse, all of which have B-V colours ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/347625a0
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