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Dark matter is a
idea based on the assumption that the universe must contain
about 73 % more mass as that what we are able to see.
Some scientist
imagine that there exist matter as we cant see.
The theory
reach so fare to claim that such 'dark matter' (of course)
composed off completely different elements, - and even that
the Universe probably is full of whole galaxies made of such
dark stuff.
Therefore
(expensive)
space-probes
now are being send out in space
searching for proof for this 'complex'
assumptions.
Surly it is a
fact that the gravitation force is stronger as our
calculations, -(based on the known matter) shows. - This
article logically shows a more down-to-earth explanation on
that 'problem'.
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