Description: Low - In Metal, Designer Disguiser-Get Low Extended, Flo Ride - Low (Screamo Cover)(New!), Low - In Metal - The Trinity Centre Bristol - 29.04.13, FLO RIDA - LOW (METAL COVER BY TAILOFF), Wage War - Low (Official Music Video)
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In astronomy and physical cosmology , the metallicity or Z is the fraction of mass of a star or other kind of astronomical object that is not in hydrogen ( X ) or helium ( Y ). Most of the physical matter in the universe is in the form of hydrogen and helium, so astronomers use the word "metals" as a convenient short term for "all elements except hydrogen and helium". This usage is distinct from the usual physical definition of a solid metal . The astronomical usage is claimed to be justified because in the
The distinction between hydrogen and helium on the one hand and metals on the other is relevant because the primordial universe is believed to have contained virtually no metals, which were later synthesised within stars.
Metal: A Headbanger's Journey is a 2005 documentary directed by Sam Dunn with Scot McFadyen and Jessica Wise. The film follows 31-year-old Dunn, a Canadian anthropologist , who has been a heavy metal fan since the age of 12. Dunn sets out across the world to uncover the various opinions on heavy metal music, including its origins, culture, controversy, and the reasons it is loved by so many people. The film made its debut at the 2005 Toronto International Film Festival , and was released as a two-disc speci