Carbon dioxide ice in the Anhur region
The VIRTIS spectrometer shown here is one of 11 experiments on board the Rosetta orbiter. It detected the existence of carbon dioxide ice in the Anhur region of the comet’s surface. The patches of dry ice spread over an area extending around 80 metres by 60 metres. The impressive Imhotep planes with their strikingly smooth surface are located to the right of the image centre.