Thursday, 12 February 2015


DARK MATTER - fantasy (or) real ......!!!!! 

Dark matter has always fascinated humans for its invisible occurrence .

Some think they are made up of  :-

  • MACHO s (short for Massive Compact Halo Object ) .
  • Neutrinos ( Hot nonbaryonic matter ) .
  • WIMPS ( Weakly interacting massive objects ) .
 Most fruitful example for its existence is the Coma cluster .

                                                                  COMA CLUSTER . 

         Gravitational anomalies were considered to be indicative of unobserved mass ( Dark matter ) . They violated basic Newtonian gravity , galaxies of the Coma Cluster were moving too fast for the cluster to be bound together by the visible matter of its galaxies .
          About 90% of the mass of the Coma cluster is believed to be in the form of dark matter .

        It is believed the invisible matter that we observe in this vast UNIVERSE is dark matter .
        Dark matter is estimated to constitute 84.5% of the total matter in the Universe .

Gravitational lensing .

gravitational lens refers to a distribution of matter (such as a cluster of galaxies) between a distant source and an observer, that is capable of bending the light from the source, as it travels towards the observer. 
This was first seen in a quasar lensed by a galaxy in 1979. More commonly , the huge dark matter concentrations in clusters of galaxies create typical bending angles of 30 arcseconds , and multiple highly distorted images of a fortuitously aligned background source galaxy .

Follow the below link for more information : 

Some scientist believe that dark matter fills most part of the visible UNIVERSE , which holds everything in the universe . 

Dark matter as shown below :


Images .( Dark matter ) .






Questions ? 

Do dark matter exist if so , then can we see them ?
Dark matter has a crucial role in the creation and existence of the Universe ?
If this matter is invisible then is this a really a matter ? 

Important links :

Hope in the future we may find all these answers and give a proper explanation for the very existence of the matter in the COSMOS ( UNIVERSE ) .

No comments:

Post a Comment