Is There a Dark Matter Particle?

It could also just be something new out there in the universe that's giving off radio missions. People have even connected it, for example, to our favorite universe mystery, which is dark matter. It it might be that dark matter is out there, and that it can annihilate with itself. That would make sense, because dark matter is pretty diffused out there. We're so surrounded by it in a halo and inner galaxyta that would so to make sense.