The only way we know the dinosaurs exist is because we're here. Could we ever travel through the universe? It's probably not going to happen. Our biology does not compatible with that. That doesn't mean we as human our humanity, can't. We have a way of propagating the thing that matters. An endinvision. Let's say we don't encounter aliens, but we ourselves become, ina far future, super powerful, superintelligent beings and start populating the galaxy. And then expand out an into the entire universe,. starting with a in elons, a mars colony, or whatever.