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Latest Hydrogen line Stories

2010-12-08 22:11:58

Thirteen billion years ago our universe was dark. There were neither stars nor galaxies; there was only hydrogen gas left over after the Big Bang. Eventually that mysterious time came to an end as the first stars ignited and their radiation transformed the nearby gas atoms into ions. This phase of the universe's history is called the Epoch of Reionization (EoR), and it is intimately linked to many fundamental questions in cosmology. But looking back so far in time presents numerous...

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2008-01-28 12:40:54

CHAMPAIGN, Ill. -- Ancient light absorbed by neutral hydrogen atoms could be used to test certain predictions of string theory, say cosmologists at the University of Illinois. Making the measurements, however, would require a gigantic array of radio telescopes to be built on Earth, in space or on the moon. String theory "“ a theory whose fundamental building blocks are tiny one-dimensional filaments called strings "“ is the leading contender for a "theory of everything." Such...

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2006-07-03 10:28:07

Rare Blob Unveiled: Evidence for Hydrogen Gas Falling onto a Dark Matter Clump? ESO's VLT has helped scientists to discover a large primordial 'blob', more than 10 billion light-years away. The most likely scenario to account for its existence and properties is that it represents the early stage in the formation of a galaxy, when gas falls onto a large clump of dark matter. Over the last few years, astronomers have discovered in the distant Universe a few so-called 'blobs'. These are rather...


Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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