Martian volcano. Coloured Mars Global Surveyor (MGS) image of the Apollinaris Patera volcano (upper centre) near the Martian equator. A patch of clouds (white) is seen by its lower left edge. This volcano is around 5 kilometres (km) in height,and the crater is some 80 km across. Clouds on Mars often form around high structures,and are composed mainly of carbon dioxide ice crystals. This image was taken in 1999,and was coloured by combining red and blue light images from the Mars Orbiter Camera (MOC) on the MGS. MGS is a NASA satellite orbiting Mars which has been observing and mapping the planet from orbit since 1998 | |
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Credit: | Science Photo Library / NASA |
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