Philae comet lander wakes up

The first spacecraft to land on a comet has renewed its contact with Earth, seven months after running out of power.

The European Space Agency's lander, Philae, stopped sending signals hours after bouncing off the comet's surface and coming to rest in a shaded area.

Now the comet has moved closer to the sun, enough light has reached its solar panels to restore communication.

David Shukman reports.