Communist Web
Friday 11th February 2000 9.30pm gmt

Big Bang Conditions Recreated

For the first time, physicists have created a new form of matter by
recreating the
conditions thought to have existed 10 microseconds after the Big Bang at the
start of the
universe,       scientists announced Thursday.
The European Laboratory for Particle Physics (CERN), based outside Geneva,
said
scientists from more than 20 countries conducted a series of experiments
which smashed
together heavy lead ions in a fireball to prove a theory that had only
existed on paper for
years.
By generating collisions at temperatures 100,000 times as hot as the sun's
center and at
energy densities never before reached in laboratory experiments, they
succeeded in
isolating tiny components called quarks from more complex particles such as
protons and
neutrons, CERN said in a report.
This provided ``compelling evidence'' for the existence of a new state of
nuclear matter, a
quark-gluon plasma, which CERN described as ``the primordial soup in which
quarks
and gluons existed before they clumped together as the universe cooled
down.''
According to CERN, the breakthrough in the project affectionately known as
the ``Little
Bang,'' is an important step in understanding the early state of the
universe, created some 12 to 15 billion years ago in a massive explosion,
or...
http://www.billkath.demon.co.uk/cw/Big-Bang-Conditions-Recreated/Big-Bang.ht
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