Invisible Mass Affecting the Expansion of the Universe Are there enough neutrinos &amp; other invisible particles in a cubic light year of space to significantly affect the expansion of the universe,&amp; at a very rough estimate without taking into account WIMPS &amp; other exotic particles for which there is no firm evidence,what would be the total mass of this quantity of matter? Only a tiny proportion of all the neutrinos emitted since the Big Bang have been absorbed,the rest are still flying around in search of a home.
Yes, there is enough of these things, especially dark matter which is accelerating the expansion of the universe.