... Mars and Orion over Monument Valley . ... Buttes are composed of hard rock left behind after water eroded away the surrounding soft rock. ... Fantastic shapes lurk in clouds of glowing gas in NGC 6188, about 4,000 light-years away. The emission nebula is found near the edge of a large molecular cloud unseen at visible wavelengths, in the southern constellation Ara. Light Pillars from a Little Planet . ... Eerie pillars of light ring the edges of this snowy little planet. ... January . ...