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from article Milky Way Galaxy
The Milky Way as seen from the Atacama Desert in Chile at an altitude of around 3,650 m (12,000 ft), with large cacti silhouetted in the foreground. (Credit: ESO/S. Guisard )
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Image
from article Milky Way Galaxy
An artist’s impression of the Milky Way Galaxy as seen from above and with the approximate location of the Sun labeled. [Credit: NASA/JPL-Caltech/R. Hurt (SSC)]
Image
from article Milky Way Galaxy
Infrared image of the Milky Way as seen from the location of the Sun, made from the 2MASS infrared sky survey. The image shows both the bulge and the disk of the Milky Way. Absorption by dust is minimized in the infrared, which accounts for the…
Image
from article Milky Way Galaxy
NGC 4603, a galaxy with a gross morphology similar to the Milky Way, seen obliquely. The spiral arms and the bulge are visible in the center. The bulge appears to be elongated because the galaxy also contains a bar, an extended feature containing…
Image
from article Milky Way Galaxy
A combination of X-ray and radio emission data from the core of the Milky Way, revealing the three-armed “minispiral” structure, with Sagittarius A* labeled, as well as other features including a jet blasted out by the supermassive black hole.…
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from article Virgo Cluster
Distribution of members of the Virgo Cluster on the sky, as determined in the du Pont Telescope survey. (After O.-G. Richter and B. Binggeli, eds., The Virgo Cluster, European Southern Observatory, 1985)
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from article Virgo Cluster
Central area of the Virgo Cluster, showing some of its brightest galaxy members. (Canada-France-Hawaii Telescope image courtesy of C. Cuillandre)
Image
from article Virgo Cluster
X-ray image of the entire Virgo Cluster. The main blob is centered on the giant active galaxy M87 (see Fig. 4). (Image from Roentgen Satellite (ROSAT) courtesy of NASA)
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from article Virgo Cluster
Giant elliptical galaxy M87. It is one of the brightest galaxies in the Virgo Cluster and is notable for its extremely massive central black hole. (Canada-France-Hawaii Telescope image courtesy of C. Cuillandre)
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from article Virgo Cluster
Sombrero Galaxy in an image obtained with the Spitzer Space Telescope. The spheroidal galaxy of stars hosts a thin, spiral-shaped ring of dust, visible in the infrared because of the light emission from the warm dust grains. (NASA/Spitzer Science…
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from article Pluto
An enhanced-color global view of Pluto taken by the New Horizons spacecraft on July 14, 2015, showing Pluto's diversity in surface texture and composition. The image (which actually is a mosaic of four images) resolves details on scales as small as…
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from article Pluto
Pluto and its five known moons, imaged by the Hubble Space Telescope on July 7, 2012. (Credit: NASA/ESA/Mark R. Showalter, SETI Institute)
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from article Pluto
A perspective view of the orbit of Pluto showing the inclination i and eccentricity of the orbit. The orbits of Jupiter, Saturn, Uranus, and Neptune are also shown. Terms: A, aphelion; P, perihelion; NN′, line of nodes. (Credit: Based on an original…
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from article Pluto
Two views of Pluto's vast nitrogen ice plain known as Sputnik Planitia. (Left) An enhanced-color close-up section of the glacial plains in the middle of Sputnik Planitia. (Right) A "scattering map" of the same region, created by combining two images…
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from article Pluto
Charon, pictured by New Horizons. (Credit: NASA/JHUAPL/SwRI)
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from article Herbig-Haro objects
Jet and bow-shock emission from Herbig-Haro 34. Two opposite jets run into the surrounding interstellar medium, where they terminate in Herbig-Haro objects with a characteristic bow-shock structure. The jets are composed of “bullets” of dense gas…
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from article Herbig-Haro objects
Spitzer Space Telescope infrared image and an optical Digital Sky Survey image of Herbig-Haro objects 46 and 47. The inset at the bottom left shows the optical image of the cloud in which the protostar is born and the associated Herbig-Haro objects…
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from article Herbig-Haro objects
Disk and jets associated with Herbig-Haro 30, showing changes between images taken in (a) 1995, (b) 1998 and (c) 2000 with the Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope. A slightly flared disk of dust and gas appears…
Image
from article Convection in the Earth
Pattern of magnetic stripes over the Reykjanes Ridge southwest of Iceland. (After J. R. Heirtzler, X. LePichon, and J. G. Baron, Magnetic anomalies over the Reykjanes Ridge, Deep Sea Res., 13:427, 1966)
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from article Convection in the Earth
Geographic setting of the Kurile Trench off the Kamchatka Peninsula, showing the deep ocean trench and the characteristic line of volcanoes in the vicinity of the subduction zone. The sections A′ and B′ illustrate the bathymetry normal to the trench…
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from article Convection in the Earth
Characteristic variation of heat flow and bathymetry. (a) Variation of surface heat flow as a function of age of the ocean floor in millions of years before present for the Pacific, South Atlantic, and Indian oceans. (b) Variation of sea-floor…
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from article Convection in the Earth
Global seismicity showing surface projections of all earthquakes which occurred during 1965–1975 with magnitudes in the range 4.5–5.5. Plate boundaries are located along the seams marked by high frequency of earthquake occurrence.
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from article Convection in the Earth
Map of global tectonic and volcanic activity over the past million years. (After The Physical World, National Geographic Society, Van der Grinten projection, 1975)
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from article Seawater
Vertical distribution of phosphate (PO43−) at three stations to show a range of characteristics found in major oceanic regions. North Atlantic is from a region in the central North Atlantic northeast of Bermuda and North Pacific is from the central…
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from article Seawater
Vertical distribution of total carbon dioxide concentrations at locations in the North Atlantic and North Pacific. Below depths of a few hundred meters, the distributions are generally characteristic of fairly large regions in the two oceans.
