“We know 85% of the matter in the universe is made of dark matter”
yep okdokey I believe you,
Especially how you first detected something, I mean nothing detectable was out there.
In some clusters, the space between galaxies is filled with extremely hot air, scientists cannot see it using visible light telescopes. The gas only can be seen as X-rays or gamma rays. Scientists look at that gas and measure how much there is between galaxies in clusters.
By doing this, they discovered that there must be five times more material in the clusters than we can detect. The invisible matter that we can’t detect is called “dark matter.”
I call it either a measurement error, or a comprehension error
‘Dark Matter’ is a place holder for ‘We don’t Know’..................