I never hear news that happens at the weekend. The Evening Standard is my main source of news (because I object to paying money to read news from the previous night), and it only publishes on weekdays. If stuff happens between Friday night and Monday morning, I don't hear about it. This Space Shuttle explosion doesn't seem very real to me, because I've only read about it on the internet (even if it was the BBC's site). It will continue to not feel real until I see it on the front pages of tomorrow's newspapers.
It's weird. I'm confused as to what the big deal is, why so many of my American friends are upset. Of course, it's tragic for anyone who knew the people involved - any death is tragic for those left behind. But all this stuff about dreams... it must only make sense to a country that has actually been involved in space exploration. I've veered between seeing it as a valuable way to find out more about our planet and a colossal waste of money. I've always seen it that way, even when I was a student in a Space and Atmospheric Physics Group.
Edit: OK, I mis-spoke. One UK-er mentioned it. A couple more in email. But even then...