age of caves — The ages of individual caves may vary enormously. In most regions the youngest cave passages have reached their present dimensions during the last 10,000 years, or since the last Pleistocene glacial retreat. In higher latitudes most caves can… … Lexicon of Cave and Karst Terminology
fossil cave — A fossil cave is an underground cavity that formed when a carbonate succession was undegoing karstification but subsequently buried. Most fossil caves have been infilled by younger sediments. See neptunian deposits, paleokarst, and relict… … Lexicon of Cave and Karst Terminology
Eris (dwarf planet) — Eris Eris (centre) and Dysnomia (left of centre). Hubble Space Telescope … Wikipedia
Triton (moon) — Triton Voyager 2 photomosaic of Triton s sub Neptunian hemisphere. The bright, slightly pinkish, south polar cap at bottom is composed of nitrogen and methane ice and is streaked by dust deposits left by nitrogen gas geysers. The mostly darker… … Wikipedia
Callisto (moon) — Callisto View of the heavily cratered terrain of Callisto s anti Jovian hemisphere obtained in 2001 by NASA s Galileo spacecraft. The large impact structure Asgard is on the limb at upper right. The prominent rayed crater below and just right of… … Wikipedia
Ceres (dwarf planet) — For other uses of the name Ceres , see Ceres. Ceres Ceres as seen by Hubble Space Telescope (ACS). The … Wikipedia
Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth … Wikipedia
Moon — This article is about Earth s Moon. For moons in general, see Natural satellite. For other uses, see Moon (disambiguation) … Wikipedia
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Mars — This article is about the planet. For other uses, see Mars (disambiguation) … Wikipedia
