Title:[3027] Mars at opposition in December 1990 (HST) Caption:Mars was 85 million km (53 million miles) from Earth when this Hubble Space Telescope image was taken on 13 December 1990. It shows the dark protruding area known as Syrtis Major Planum. To the southeast of Syrtis Major, the large circular impact basin, Hellas Planitia, is visible. Copyright: Credit:Philip James and NASA