...but if this doesn't gob-smack you, you're dead inside:
http://news.bbc.co.uk/1/hi/sci/tech/7725584.stm
I mean, we've known they were there, in theory, at least since Newton; we've known they were there, by observation (star wobbles, etc.), for 20 years. But this is direct observation. We can see them. To me, this is a Neil Armstrong moment.