Talk:Kakine Teitoku/@comment-86.176.149.235-20141001212037/@comment-178.27.206.93-20170617165407

Well, no.

Dark matter was a postulated hypothesis, centering on the fact that if one takes into account the estimated total mass of the Universe (how they did that is a little more confusing, and not really relevant here) and the expansion rate of the universe - either something is really wrong with current accepted theory on the way light and gravity work, or the total mass of the universe should be alot higher than estimated... (my head tells me we're missing 75% of what should be there, but this is old knowledge...)

The idea was that there was matter of some kind out there that couldn't be found with imaging techniques available to us. 'Dark Matter' in other words. It isn't anything spectacular, it's just mass that isn't currently being hit by light (or any other electromagnetic wave type) or a planet in a solar system. (as I said, this is noob physics, so take what I say with a grain of salt.)

This 'lack' of mass, that they couldn't find was postulated to among other things be something like huge stone masses the size of the sun traveling the universe and not reflecting light.

It was also postulated that what was missing wasn't matter at all, but energy - E=mc² means that energy also has a gravitational pull- 'Dark Energy' in other words, since no one's found it yet.

What you're probably thinking of is anti-matter, which can't exist on earth either for very long, which very empathetically does exist.