CERN HAS ANTI-MATTER

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james tate
@james tate
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O.K.
They held Antimatter for a part of one secound.
In partical physics
Antimatter is the extension of the concept of the antipartical to matter it is composed of antiparticals in the same way matter is composed of particals.

Dark matter
Is inferred to exist from gravitational effects its existence is hypothical to account for decrepencies between mesaurements of mass.

Dark energy
Pressure is associated with some of engergy we do not know the origins or characteristics of dark engergy.