nostr:npub1knzsux7p6lzwzdedp3m8c3c92z0swzc0xyy5glvse58txj5e9ztqpac73p how is it we know the universe is matter dominated, rather than having an equal amount of antimatter? Would we know if a star or galaxy we see is antimatter? Or if beyond our visible limit there is lots of antimatter?