How to Fly From Sydney to Edinburgh

Sydney, Australia is too far away from the UK to do a single single flight. The longest flights in the world are like 18 hours in the air. I'm chronically sleep deprived at this point in my life. Anyone who does 24 hour live stream or some sort of 24 hour now, it seems really doable. And anyone who does it is like like physically sick afterwards. It's way harder than you think it's going to be staying up for that long.