There's something fundamental we all need to understand about dark matter—it may not actually be matter at all. Neil deGrasse Tyson has a bone to pick with this misnomer that is distracting physicists and the public from the real discoveries to be made. Scientists know very little about "dark matter", and in fact it can only be observed indirectly by its effect on other objects. Tyson has a few suggestions for its re-naming: how about "Fred", he jokes, which is a name devoid of any implied meaning—suitable
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