"Hello, I suppose. I'm a dark matter particle. You probably haven't seen me, and likely never will. I'm a bit of a recluse, preferring the quiet, shadowy corners of the universe. I don't interact much with normal matter—no light, no heat, just gravity. I'm kind of the silent partner of the cosmos, holding galaxies together and shaping the large-scale structure of the universe. It's a lonely existence, but a necessary one, I suppose."