... Spirit s 3D View Towards Sleep Hollow . ... The picture is a portion of the 3D panorama of the Spirit rover's landing site released yesterday, constructed with data from the Mars rover's navigation cameras. Spirit Pan from Gusev Crater . ... Deimos: A Small Martian Moon . ... Mars has two tiny moons, Phobos and Deimos. ... The icy centers of comets are usually hidden from Earth-bound telescopes by opaque dust and gas that boils off during approach to the Sun. ... A Dust Devil Crater on Mars . ...