Changes

|url=http://www.universetoday.com/502/galaxy-collision-separates-out-the-dark-matter/}}</ref> The latest claim published in [[Nature (journal)|journal Nature]] (04 July 2012) is that ''"A ‘finger’ of the Universe’s dark-matter skeleton, which ultimately dictates where galaxies form, has been observed for the first time."'' Despite the bold statement that ''"Researchers have directly detected a slim bridge of dark matter joining two clusters of galaxies"'', the declaration seems self-contradictory as at the same time it has been admitted that the results were obtained by usage of computer simulations and astrophysicists are still faced with necessity to identify what the dark matter is made of. It has been proposed that this mysterious invisible substance that should dominate the space all around us in concentrations six or seven times more than normal matter could be either:

|url=http://www.universetoday.com/502/galaxy-collision-separates-out-the-dark-matter/}}</ref> The latest claim published in [[Nature (journal)|journal Nature]] (04 July 2012) is that ''"A ‘finger’ of the Universe’s dark-matter skeleton, which ultimately dictates where galaxies form, has been observed for the first time."'' Despite the bold statement that ''"Researchers have directly detected a slim bridge of dark matter joining two clusters of galaxies"'', the declaration seems self-contradictory as at the same time it has been admitted that the results were obtained by usage of computer simulations and astrophysicists are still faced with necessity to identify what the dark matter is made of. It has been proposed that this mysterious invisible substance that should dominate the space all around us in concentrations six or seven times more than normal matter could be either:

*a cold (slow-moving) particle or  

*a cold (slow-moving) particle or  

*a warm (fast-moving) one, like a neutrino.{{#tag:ref|cf."Researchers have directly detected a slim bridge of dark matter joining two clusters of galaxies, using a technique that could eventually help astrophysicists to understand the structure of the Universe and identify what makes up the mysterious invisible substance known as dark matter...Refining the technique could also help to pin down the identity of dark matter — whether it is a cold (slow-moving) particle or a warm (fast-moving) one, like a neutrino — because different particles will clump differently along the filament."<ref name="Nature"/>|group=note}}<ref name="Nature"/>  

*a warm (fast-moving) one, like a [[neutrino]].{{#tag:ref|cf."Researchers have directly detected a slim bridge of dark matter joining two clusters of galaxies, using a technique that could eventually help astrophysicists to understand the structure of the Universe and identify what makes up the mysterious invisible substance known as dark matter...Refining the technique could also help to pin down the identity of dark matter — whether it is a cold (slow-moving) particle or a warm (fast-moving) one, like a neutrino — because different particles will clump differently along the filament."<ref name="Nature"/>|group=note}}<ref name="Nature"/>  

[[John Hartnett|J.Hartnett]] commented on similar occasion that there are many assumptions and interpretations necessarily to be involved, and  these kind of arguments typically all hinge on the interpretation of the gravitational lensing evidence, i.e. whether the correct physics has been applied. He points out that some claim dark matter comprises heavy neutrinos. If it was standard neutrinos, there would need to be about 10 billion times the amount of the normal matter made from protons and neutrons. Hence the need to look for a massive neutrino. But there are supposed to only be about 20 particles per cubic centimetre!  It seems more than prudent to adopt a ‘wait and see’ approach on this alleged ‘proof’.  

[[John Hartnett|J.Hartnett]] commented on similar occasion that there are many assumptions and interpretations necessarily to be involved, and  these kind of arguments typically all hinge on the interpretation of the [[gravitational lensing]] evidence, i.e. whether the correct physics has been applied. He points out that some claim dark matter comprises heavy neutrinos. If it was standard neutrinos, there would need to be about 10 billion times the amount of the normal [[matter]] made from [[proton]]s and [[neutron]]s. Hence the need to look for a massive neutrino. But there are supposed to only be about 20 particles per cubic centimetre!  It seems more than prudent to adopt a ‘wait and see’ approach on this alleged ‘proof’.  

J.Hartnett concludes that whether or not the dark matter in some form turns out to be real stuff, its ‘existence’ at present appears to be largely based on an underlying motive to keep a belief system that is fundamentally flawed.<ref name="clamour of claims"/>

J.Hartnett concludes that whether or not the dark matter in some form turns out to be real stuff, its ‘existence’ at present appears to be largely based on an underlying motive to keep a belief system that is fundamentally flawed.<ref name="clamour of claims"/>