Space Probe Lands on Comet
A story 10 years in the making, a space probe named Philae landed on a comet today. Incredibly, the probe was launched in 2004 which makes for a pretty impressive story. This Flickr Gallery of photos is incredible viewing.
The internet is kind of abuzz with this story, so there's lots of places to read about it. Here's one story from the Guardian.
Update: the always wonderful Oatmeal also weighs in on the event.