> If UFOs are real then that necessarily implies the existence of some new physics beyond general relativity. Why? If I lived for a million years then interst

> If UFOs are real then that necessarily implies the existence of some new physics beyond general relativity. Why? If I lived for a million years then interstellar travel would be feasible for me with the physics we know. We have trouble defining "life" in general terms because we only know of this planet. If intelligent life developed (some say it has developed here :-) in the universe then there is no predicting what form it would take. We may not recognise it, or it us