ESA 's Philae landing craft is due to touch down on a comet surface on November 12 . Comment: Philae has been designed to grip like a limpet because the comet 's gravity is so weak . If it works then the surface science can really begin . If successful , first pictures could come back about two hours after landing .
ESA 's Philae landing craft is due to touch down on a comet surface on November 12 . Comment: Philae has been designed to grip like a limpet because the comet 's gravity is so weak . If successful , first pictures could come back about two hours after landing .