Little of the results have so far been released by the various instrument teams. The one major exception is MUPUS. This sensor package from the German space agency's Institute for Planetary Research deployed a thermometer on the end of a hammer. It retrieved a number of temperature profiles but broke as it tried to burrow its way into the comet's subsurface.
Scientists say this shows the icy material underlying 67P's dust covering to be far harder than anyone anticipated - having the tensile strength of some rocks. It also helps explain why Philae bounced so high on that first touchdown.
The 4km-wide comet has little gravity, so when key landing systems designed to hold the robot down failed at the crucial moment - the probe would have been relying on thick, soft, compressive layers to absorb its impact. However much dust it did encounter at that moment, it clearly was not enough to prevent Philae making its giant rebound.
