I know this betrays my ignorance but it just seems that dark matter is a rather implausible explanation for the apparent evidence of additional gravitational force being exerted.<p>&quot;must outweigh familiar, atomic, matter by about six to one&quot; but despite our best efforts it cannot be detected but there&#x27;s vast amounts of it.<p>It seems to me there must be a better explanation because so far this one (i.e. it&#x27;s there but we just can&#x27;t detect it at all) just doesn&#x27;t make sense.