How Are We Searching For Dark Matter? And How Do We Even Know It’s Real?

I forgot to say, You are doing great stuff Mr. Fraser. I appreciate your efforts. :-)

Mr. Fraser, I'm hoping you can answer this. :-) Do the models that strongly suggest the existence of dark matter stand on the assumption that the universe is more or less homogeneous on the grand scale? Perhaps, like the Earth, the universe isn't flat either. We could be dealing with the anthropic principle where we are here observing a "flat" universe because locally (within 13+ billion ly in all directions) the uniformity is needed to allow for life to exist. I get frustrated that astonomers don't communicate enough that we don't really know how big the whole universe is. We only know the 26+ billion ly minimum. The universe could be billions of times bigger than that (or infinite) and we'd know nothing about it. I know that scientists and teachers are in the business of knowing things (and looking like they know things) but I think it is good to occasionally know (and express) the limits of our current knowledge. No one knows it all. Any one who says they do is selling something. :-) It's good to know your "question marks" and how big they are and not be embarrassed by them. They are fundamental players in science and should be embraced no matter how humbling that may seem. :-) I personally am not convinced the universe is "flat" or more or less evenly "filled". I can only say that about distant space that can actually be seen. The rest is speculation, but we DO need to "Keep looking up." and keep thinking and communicating about our observations. :-) I ❤️ ❓'s

Excellent!