The first port of call is the ESA Livestream, where all the major events will be shown and new data announced. If I've made this work right, it should be playing above this paragraph. It can also be found (along with lots of other stuff) on the Rosetta homepage.
|Timeline of Philae's seven-hour descent onto Comet 67P. The signal from a successful touchdown should arrive at or after 4pm GMT. Click on the image to enlarge. Image Credit: ESA|
|Image of Philae's targeted landing site, known as Agilkia. Image Credit: ESA|
Apart from the ESA Livestream, the best place to stay up to date with the landing is proably Twitter. I will be tweeting updates and my feed should hopefully be appearing below this paragraph. You should also have a look at #CometLanding.
Good luck Philae!
Tweets by @AstroDave2