(1). Creation Propagation and Extinction of 96%Dsrk remnants. Gravitational,mechanical, Neutrino(dark photon, termed as Dotton)and sound etc are dark energy. Only single atom(termed by me as Dattom, well known as God particle of mass 125+-0.35 amu) and several predattom are present in dark domain.It is always remain at 0°A(unithermic by nature and it is monotonous because it has no electron).(2).Most important dark equation is invented by me which is more important than Einestine’s renowned equation E==m×c^2; :- EEAMU(931ev)==MD(125)×BEPN(7.5 ev), where EEMU is energy equivalent one atomic mass unit, MD is the mass of Dattom and BEPN is average binding energy per nucleon.(3). Dattom could not form in artificial cyclotron chamber, rather it is created in Stars/Supernova by continuous accumulation of dark neutrino generated during fusion reaction of hydrogen which is the actual reason for missing of two third neutrino from sun surface. Again Black Holes also creators of Dattoms when neutrino generated during continuous formation and deformation of Neutron.(4). Present day Scientist are unable to solve the mystery of actual existence of total dark energy (25.5×10^70 joule). But I have mathematically solve this problem.(5). Initially no dark remnants was present, but during propagation of remnants, white remnants are transformed to dark (now only 4% white remains and 96% Dark present).At the end phase after Unithermic line of zero degree kelvin, only dark remnants do exist which ply a predominant role for the extinction of the universe with left handed chirality of Neutrino(simultaneously right handed chirality of antineutrino of anti universe). .Now I want to inform you that I am theoretically successful to designed/discovered pollution free perpetual power generating machines which is applicable for power station,road running vehicles, train ,sea ship,airplane etc.which could be able to run with the aid of free and highly available dark fuel. But due to lack of any assistance from any corner,it is not possible for me to verify the feasibility of my machines. Hence you may donate any nominal amount to my google pay account for the sake of human civilization. You are requested to go through my blog(:- bhaskarbhabanidutta.com) after translating it to your own language by Google translator at the right top bar( … ) of my blog . 4). Dark matter and dark energy:- Gravitational force, neutrino or weak force,mechanical energy, sound energy, potential energy etc are the examples of dark energy of the universe. And only single atom present in dark domain which is named by me as Dattom and which is nothing but the so called God particle(originator of all gravitational force of attraction). And also fraction/parts of Dattom is present in all the nucleus of the atoms which I termed as predattom which is responsible for binding the atoms in the universe. Due to absence of any electron cloud in Dattom, dark domain is colourless monotonous in nature and it always remain at 0°A temperature and as a result no thermodynamic activities are observed like white domain. Dattom grows/born in Stars, super nova, black holes etc as dark baby by continuous huge accumulation of neutrino generated by the nuclear fusion reaction and continuous formation/deformation of neutron in the black holes. Again Unique invention of the following formula(by me)relating mass(125 amu) of so called God particle (which is actually the only atom or dattom of the dark domain), the energy equivalent of single atomic mass unit(EEAMU,i.e,931Mev) and average binding energy per nucleon. Energy equivalent of single atomic mass unit(EEAMU,i.e,931 Mev) when divided by mass of Dattom(MD) or God particle (125) give rise to 7.5 Mev which is the average nuclear binding energy per nucleon(BEPN).[i.e, Dark formula 931Mev ÷ MD(125)==7.5Mev(BEPN)]. The implications of this formula is as good as Einstein ‘s white formula E== MC ^2. Considering and remembering the devastating after effect and mis utilisation of e=mc^2, detail knowledge of my formula must kept concealed for the sake of human civilization.Now I want to explain in detail about the creation, propagation and extinction of Dark Matter and Energy.(which is explain in detail in my Blog: bhaskarbhabanidutta.com). Present day scientists are unable to detect the existence of huge Dark energy(28×10^53 kg or,25.48×10^70 joules)in the universe. I do here with providing the solution of the unsolved problems as follows. It is worthwhile to mention that the total dark energy (DE) is the summation of gravitational potential(Dark Energy) and kinetic energy (Dark Energy). Hence Total gravitational potential(GP) of universe,i.e, GP =GMm/R=6.67×10^- 11×(7.5×10^53)^2 ÷2.2×10^26=17×10^70 joule, where it is presumed that M=m=1/2× total mass of universe and R = Radius of universe. Again average Kinetic Energy of universe= 1/2×GP=8.5×10^70 joule. Hence total Dark Energy=(8.5+17)×10^70=25.5×10^70 joule, which is exactly equal to the actual dark energy theoretically calculated. Dark matter/dark atom/dattom only could formed within Stars, Super Nova, Black holes etc. by the continuous shower of neutrinos, which are produced/generated by the Nuclear fusion reaction which occurred in Stars/Super Nova etc. And also neutrino formed in black holes by continuous formation/deformation of neutron. Continuous supply of neutron in Black holes occurred by nuclear crashing of larger atoms/metallic atoms. This is the reason why the metalic element are not available in old elliptical galaxies. The Dattom dump( known as Singularity)present in the black holes,act as a crusher of higher atoms and forming electron, proton and neutron, which maintain continuous supply of neutron/neutrino. This is the reason why elliptical older galaxies contains much lesser amount of heavier metalic atoms than young spiral galaxies.Absence of electron in the dark domain make it colourless monotonous single dark atom domain. Only single dark atom which l have termed it as Dattom of atomic wt. 125.09+/–0.21amu.(so called God particle) with life span of 10^29 years, and Zero charge with uni thermic characteristic at 0°A/K. It is a misstatement that Dattom could be produced/detected in Cyclotron chamber. So called detected God particle is nothing but cluster of neutron with very short life span.In the domain of blinds nothing is visible.Neutrino is a Dark Photon or Doton with left handed helicity and chirality. Dark energy (gravitational, sound, mechanical energy etc) is flat in nature(different from white EMW with wave character) is non elastic in nature and have limited infinite velocity. Huge accumulation of Dattoms formed in Stars and black holes, (l have termed it as Dattom dump) are the dark baby produced in Stars/super nova (similarly our Sun is pregnant with so many dark baby in her womb)and when this dark dump produced in black holes was termed as Singularity by so called scientists. Every atom contains pre dattom (which account for its weight and origin of gravitational force of attraction of every atom) in their nucleus. The mass of these pre dattom are fixed for particular atom but different for different atoms and these pre dattom originates gravitational force of attraction of the atoms and bind the atom with the other atoms and universe also .In all the nucleus of the atoms, pre dattom must be present at the centre of the nucleus to provide its further stability and to originate gravitational force of attraction which contribute also the mass/weight of the atoms. At the very initial phase of universe dark remnants is virtually absent but at the end phase cent per cent dark remnants is present. During propagation of universe all the white remnants are transform/utilised/expended to generate dark remnants. At this moment only 4% white remnants remains and 96% Dark remnants present in our universe which indicates that we are not so far from the end phase of extinction.