'It's all good news about Philae'

No new signals have been picked up from the Philae comet lander since a brief radio contact on Sunday, but controllers say this is not really surprising.

In time, however, the mission team is confident the robot can fulfil its science ambitions on Comet 67P

Barbara Cozzoni, a lander engineer from the German space agency, explained what was known about the status of Philae currently to our science correspondent Jonathan Amos.