What the comet would look like over Europe's biggest cities

The BBC has a video here of why we never want to see a comet land on Earth:

After a historic but awkward comet landing, the robot probe Philae is now stable and sending pictures.
The probe is around the size of a washing machine and it is hoped it will explore the four-kilometer-wide comet, so scientists can learn more about the origins of our Solar System.
To get a sense of the scale of 67P/Churyumov-Gerasimenko, the European Space Agency has released a video (above) which compare it with some of the largest cities in Europe.

Rico says that big fireball in the sky was the last thing the dinosaurs saw, too: