WATCH: UK Prime Minister David Cameron addresses the Australian parliament in Canberra ticker_video Pause ticker Previous item Next item Battery will limit comet lander life Philae Previous image | Pause | Next image 1 / 3 After a historic but awkward comet landing, the robot probe Philae is now stable and sending pictures - but faces concerns about its battery life. 1371 Is mission worth the cost? Compare comet to your city Watch Press excited by comet probe landing One giant leap for Europe Philae probe images shown off Watch How to land on a comet Image purported to show Abu Bakr al-Baghdadi (05/07/14)IS issues 'message from leader' Islamic State releases an audiotape it says was recorded by its leader Abu Bakr al-Baghdadi, days after reports he had been killed or injured. Profile: Abu Bakr al-Baghdadi Can IS survive without Baghdadi? 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