As you know,the unknown nature of dark matter and dark energy are important problems of cosmologists today.Here we want to share our information and latest news about them.
I have attached a power point file which is a lecture on dark matter as an introduction.
http://sfwdmotahari.persiangig.com/d...artment%29.pps
It contains the definitions of the latest theories for the nature of dark matter and the effects that help astronomers to find it
The essence of dark energy is really more complex and unknown and it seems to be a created amazing factor which seems essentials for calculations on cosmological models to correspond with observations but there is no powerful theory for its nature till now!
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