3 ms·
I am not a physicist, just someone with an armchair interest but... If dark matter is theorized to explain more gravity than there would be without it, that im
by squirrelicus 8y ago
I am not a physicist, just someone with an armchair interest but...
If dark matter is theorized to explain more gravity than there would be without it, that implies dark matter has a gravitational effect, which means it too might coalesce into very dense things. Perhaps dark matter also forms star-like gravitational bodies, but whatever makes it "dark" hides those too.
It seems weird because I'm almost suggesting... Cloaked stars. Which on the face seems terribly unscientific, given what we know about EM radiation of things. But i think dark matter implies things that don't radiate in the EM spectrum.
Part of me wants to speculate that dark matter is a gravitational force echoing from 4th dimensional matter. Like if a cube affected a plane over which it hovered. But that's just me being an ignorant speculator.
- FreeFull 8y agoThe thing about dark matter is that because it doesn't seem to interact in any way other than gravitationally, there is no way for it to lose energy and clump together. So, collections of dark matter tend to stay rather diffuse. The way you could notice such a collection without any visible matter is through gravitational lensing.
- peanutz454 8y agoWhy is loosing energy required for particles to clump together?
- smsx 8y agoIf they don't lose energy by interacting through some force other than gravity when they get close together, then they will whip right past each other with nothing to slow them down.
- dagss 8y agoThink about two dark matter clouds crashing into each other. Each cloud just continues with the same speed in the direction it had. They dont interact other than gtavitationally. After passing each other they start to pull on each other gravitationally and slow each other down. Eventually stop and accelerate towards each other again. And so they can oscillate forever back and forth, if left to themselves without other clumps. But at no point would they "clump"... they are only close to one another in space when their speeds are most opposite one another. Being clumped means being im the same location and having the same speed.
- roywiggins 8y agoI expect they would lose energy and clump together due GR effects- the system will emit gravitational waves. https://en.wikipedia.org/wiki/Gravitational_wave#Binaries https://en.wikipedia.org/wiki/Gravitational_wave#Binaries