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 ) .
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 .
A 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 ) .
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 ) .