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The Oort cloud (/ ɔːrt, ʊərt /), [ 1 ] sometimes called the Öpik–Oort cloud, [ 2 ] is theorized to be a vast cloud of icy planetesimals surrounding the Sun at distances ranging from 2,000 to 200,000 AU (0.03 to 3.2 light-years). [ 3 ][ note 1 ][ 4 ] The concept of such a cloud was proposed in 1950 by the Dutch astronomer Jan Oort, in ...
Cumulonimbus (from Latin cumulus 'swell' and nimbus 'cloud') is a dense, towering, vertical cloud, [1] typically forming from water vapor condensing in the lower troposphere that builds upward carried by powerful buoyant air currents. Above the lower portions of the cumulonimbus the water vapor becomes ice crystals, such as snow and graupel ...
Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.
t. e. In meteorology, a cloud is an aerosol consisting of a visible mass of miniature liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body or similar space. [ 1 ] Water or various other chemicals may compose the droplets and crystals. On Earth, clouds are formed as a result of saturation of the ...
The first images from space were taken on the sub-orbital V-2 rocket flight launched by the US on October 24, 1946. Satellite image of Fortaleza. Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites operated by governments and businesses around ...
Noctilucent clouds are composed of tiny crystals of water ice up to 100 nm in diameter [ 4 ] and exist at a height of about 76 to 85 km (249,000 to 279,000 ft), [ 5 ] higher than any other clouds in Earth's atmosphere. [ 6 ] Clouds in the Earth's lower atmosphere form when water collects on particles, but mesospheric clouds may form directly ...
The list of cloud types groups all genera as high (cirro-, cirrus), middle (alto-), multi-level (nimbo-, cumulo-, cumulus), and low (strato-, stratus). These groupings are determined by the altitude level or levels in the troposphere at which each of the various cloud types is normally found. Small cumulus are commonly grouped with the low ...
Cirrus (cloud classification symbol: Ci) is a genus of high cloud made of ice crystals. Cirrus clouds typically appear delicate and wispy with white strands. Cirrus are usually formed when warm, dry air rises, causing water vapor deposition onto rocky or metallic dust particles at high altitudes.