Please help
Why can't dark matter cool down? What consequence does that have for the size of a dark matter halo?

Question

xxdabossxx · Answer

@saldis

pinknabastak · Answer

please help ....i need to turn it in

knawk · Answer

It's because the mass of the gas doesn't produce enough gravity to exceed the force that made it expand.

pinknabastak · Answer

@Knawk so that would be the consequence? that it can't expand

pinknabastak · Answer

so then why can't it cool?

knawk · Answer

Yes, it cannot expand.

pinknabastak · Answer

@Knawk  so why can't it cool down?

knawk · Answer

dark matter dilutes when it spreads into a larger volume, and causes the same gravitational attraction as ordinary. like i mentioned earlier "doesn't produce enough gravity.."

also, matter varies, and dark matter differs a lot. it doesn’t emit any electromagnetic radiation for all we can tell.

it's really complicated but these are some reasons it doesn't cool down.

pinknabastak · Answer

@Knawk  okay, Thank you so much !!!

knawk · Answer

You're welcome =)