Rosetta Update: Landing site options not very safe [Coffee-byte]

In an interesting turn of events, scientists at the European Space Agency are having a difficult time determining the perfect landing spot for Rosetta 's probe, Philae . An earlier update from the agency at the beginning of the month had revealed that 5 landing spots had been shortlisted from the the probable list of 10 chosen first. Comet 67P. Image source: www.dailymail.co.uk But further analysis of these sites has shown that none of them seem safe enough for Philae to land. Rosetta has been returning high resolution images of these probable sites of landing and the comet 67P seems to have layered cliffs along most of the landing sites that have been identified so far. Philae needs a landing strip close to 1 km long and hitting one of the layered cliffs might end its mission prematurely. The comet's duck shaped body does not make life easier as well. There is sufficient landing space on some other sites on the comet but due to their location, they do not h