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Teckning av Ferdinand Boberg. Södermanland, Selebo hd., Ytterselö sn., Målsåker

Teckning av Ferdinand Boberg. Södermanland, Selebo hd., Ytterselö sn.,...

Teckning av Ferdinand Boberg. Södermanland, Selebo hd., Ytterselö sn., Målsåker Public domain photo of Swedish 20th-century drawing, free to use, no copyright restrictions image - Picryl description.

Stallarholmsbron, till vänster Seaön, fotograferad en vecka före invigningen.

Stallarholmsbron, till vänster Seaön, fotograferad en vecka före invig...

Stallarholmsbron, till vänster Seaön, fotograferad en vecka före invigningen.

Range : 7 million kilometers (5 million miles) Callisto is Jupiter's outermost Galilean satellites and darkest of the four(but almost twice as bright as Earth's Moon). Mottled appearance from bright and dark patches. Bright spots seem like rayed or bright halved craters seen on our Moon. This face is always turned toward Jupiter. Photo taken through violet filter. Ganymede is slightly larger than Mercury but much less dense (twice the density of water). Its surface brightness is 4 times of Earth's Moon. Mare regions (dark features) are like the Moon's but have twice the brightness, and believed to be unlikely of rock or lava as the Moon's are. It's north pole seems covered with brighter material and may be water frost. Scattered brighter spots may be related to impact craters or source of fresh ice. ARC-1979-A79-7020

Range : 7 million kilometers (5 million miles) Callisto is Jupiter's o...

Range : 7 million kilometers (5 million miles) Callisto is Jupiter's outermost Galilean satellites and darkest of the four(but almost twice as bright as Earth's Moon). Mottled appearance from bright and dark ... More

Callisto , The outermost Galilean Satellite , or Moon , of Jupiter, as taken by Voyager I . Range : About 7 Million km (5 Million miles) . Callisto, the darkest of the Galilean Satellites, still nearly twice as bright as the Earth's Moon, is seen here from the face that always faces Jupiter. All of the Galilean Satellites always show the same face to Jupiter, as the Earth's moon does to Earth. The Surface shows a mottled appearance of bright and dark patches. The former reminds scientists of rayed or bright haloed craters, similiar to those seen on earth's Moon. This color photo is assembled from 3 black and wite images taken though violet, orange, & green filters ARC-1979-AC79-7002

Callisto , The outermost Galilean Satellite , or Moon , of Jupiter, ...

Callisto , The outermost Galilean Satellite , or Moon , of Jupiter, as taken by Voyager I . Range : About 7 Million km (5 Million miles) . Callisto, the darkest of the Galilean Satellites, still nearly twic... More

This photo of Callisto, outermost of Jupiter's four Galilean satellites, was taken a few minutes after midnight (PST) Feb. 25 by Voyager 1. The distance to Callisto was 8,023,000 kilometers (4.98 million miles). The hemisphere in this picture shows a fairly uniform surface dotted with brighter spots that are up to several hundred kilometers across. Scientists believe the spots may be impact craters but higher-resolution photos will be necessary before the features can be interpreted. Callisto is about the same size as the planet Mercury--about 5,000 kilometers (3,000 miles) in diameter. Callisto is less massive than Mercury, however, giving it a density less than twice that of water. Scientists believe Callisto, therefore, is composed of a mixture of rock and ice (up to about 50 percent by weight). Its surface is darker than those of the other Galilean satellites, but is still about twice as bright as Earth's Moon. This black-and-white photo was taken through a violet filter. Jet Propulsion Laboratory manages and controls the Voyager project for NASA's Office of Space Science. (JPL ref. No. P-21149) ARC-1979-A79-7027

This photo of Callisto, outermost of Jupiter's four Galilean satellite...

This photo of Callisto, outermost of Jupiter's four Galilean satellites, was taken a few minutes after midnight (PST) Feb. 25 by Voyager 1. The distance to Callisto was 8,023,000 kilometers (4.98 million miles... More

Range : 7 million kilometers (5 million miles) Callisto is the outermost Galilean satellite of Jupiter and the darkest of the four, but still twice as bright as Earth's Moon. Mottled appearance from bright and dark patches; bright ones look like rayed or brite craters on our Moon. This face of Callisto is always turned toward Jupiter. Photo taken through violet filter. ARC-1979-A79-7017

Range : 7 million kilometers (5 million miles) Callisto is the outermo...

Range : 7 million kilometers (5 million miles) Callisto is the outermost Galilean satellite of Jupiter and the darkest of the four, but still twice as bright as Earth's Moon. Mottled appearance from bright and... More

Range : 34 million km. ( 21.1 million miles) P-22993C This Voyager 1 photograph of Saturn was taken on the last day it could be captured within a single narrow angle camera frame as the spacecraft neared the planet for it's closest approach on Nov. 12, 1980. Dione, one of Saturn's innermost satellites, appears as three color spots just below the planet's south pole. An abundance of previously unseen detail is apparent in the rings. For example, a gap in the dark, innermst ring, C-ring or Crepe Ring, is clearly shown. Also, material is seen inside the relatively wide Cassini Division, seperating the middle, B-ring from the outermost ring, the A-ring. The Encke division is shown near the outer edge of A-ring. The detail in the ring's shadows cast on the planet is of particular interest. The broad dark band near the equator is the shadow of B-ring. The thinner, brighter line just to the south is the shadow of the less dense A-ring. ARC-1980-AC80-7003

Range : 34 million km. ( 21.1 million miles) P-22993C This Voyager 1 ...

Range : 34 million km. ( 21.1 million miles) P-22993C This Voyager 1 photograph of Saturn was taken on the last day it could be captured within a single narrow angle camera frame as the spacecraft neared the p... More

Range : 7.7 million km. ( 4.8 million miles ) P-29465 In this image captured by Voyager 2, three newly discovered satellites of Uranus can be seen orbiting outside of the nine known rings of Uranus. The outermost of the rings, the Epsilon Ring can be seen here at upper right. The largest of the three moons viewed here, 1986U1, was discovered January 3rd. it is an estimated 90 km. ( 55 mi. ) across and its orbits Uranus every 12 hours, 19 minutes ata distance of 66,090 km. ( 41,040 mi.) from the planets center. the other two moons are slightly smaller, 1986U3 orbits every 11 hours, 6 minutes at 61,750 km. ( 38,350 mi.),1986U4 every 13 hours, 24 minutes at 69,920 km. ( 43,420 mi.). They were dicovered on January 9th and 13th, respectively. Long exposures were required to bring out these small objects. As a result of the relative motions of the spacecraft and the moons, they appear slightly elongated. ARC-1981-A86-7005

Range : 7.7 million km. ( 4.8 million miles ) P-29465 In this image c...

Range : 7.7 million km. ( 4.8 million miles ) P-29465 In this image captured by Voyager 2, three newly discovered satellites of Uranus can be seen orbiting outside of the nine known rings of Uranus. The outerm... More

Range: 72.3 million km. ( 44.9 million miles ) P-29314B/W This Voyager 2 photograph of Uranus shows the planets outermost, or epsilon, ring. This is a computerized summation of six images shot by the narrow angle camera. It is the first photo to show the epsilon ring unblurred by Earth's atmosphere. The Epsilon ring, some 51,200 km. ( 31,800 miles ) from the planets center, is the most prominent of Uranus' nine known rings. Ground based observations of stellar occulations by the rings have determined that the Epsilon ring is eccentric, or elliptical, with its widest portion about 100 km. ( 60 miles ) wide and its narrowest portion about 20 km. (12 miles ). Estimates of the rings brightness suggest that it is also very dark, with a reflectance of only 1 or 2 percent and a probable composition of carbonaceous material similiar to that on dark asteroids and the dark side of Saturn's moon Lapetus. Because the ring is so narrow and dark, at this range, the Voyager camera could not resolve even the widest part, resulting in long exposure times so obtain a good image. six exposures of 11 or 15 second duration were added together by computer to produce this image. In this image, the central portion is greatly overexposed. Various artifacts due to electronic effects and image proccessing can be seen in the central portion of the frame, including the dark image just above the planets image, the diffuse brightening below it and the small, bright projection from the edge of the planet in the upper left. The ring is distinctly less prominent in the lower left portion and more prominent in the upper right. This is in agreement with the predicted locations of the narrow and wide portions of the ring, respectively. ARC-1985-A86-7001

Range: 72.3 million km. ( 44.9 million miles ) P-29314B/W This Voyage...

Range: 72.3 million km. ( 44.9 million miles ) P-29314B/W This Voyager 2 photograph of Uranus shows the planets outermost, or epsilon, ring. This is a computerized summation of six images shot by the narrow a... More

Range : 2.77 million miles (1.72 million miles) resolution : 51 km. (32 mi.) P-29495C This Voyager 2 photograph of the outermost Uranian satellite, Oberon is a computer reconstruction of three frames , exposed through the narrow angle camera's blue, green, and orange filters. the grayness or apparent lack of strong color is a distinctive characteristic of the satellites and the rings of Uranus and can serve as one indicator of the possible composition of the satellites' surfaces. Oberon has a diameter of about 1,600 km. (1,000 mi.) and orbits the planet at a radial distance of 586,000 km. (364,000 mi.). Oberon's surface displays areas of lighter and darker material, probably associated in part with impact craters formed during its long exposure to bombardment by cosmic debris. Thr resolution of this particular image is not sufficient, however, to reveal with confidece the nature of these features. ARC-1986-AC86-7012

Range : 2.77 million miles (1.72 million miles) resolution : 51 km. (...

Range : 2.77 million miles (1.72 million miles) resolution : 51 km. (32 mi.) P-29495C This Voyager 2 photograph of the outermost Uranian satellite, Oberon is a computer reconstruction of three frames , expose... More

Range : 2.52 million miles (1.56 million miles) P-29481B/W Voyager 2 returned this photograph with all nine known Uranus rings visible from a 15 sec. exposure through the narrow angle camera. The rings are quite dark and very narrow. The most prominent and outermost of the nine, Epsilon, is seen at top. The next three in toward Uranus, called Delta, Gamma, and Eta, are much fainter and more narrow than Epsilon ring. Then come Beta and Alpha rings, and finally, the innermost grouping, known simply as the 4,5, & 6 rings. The last three are very faint and are at the limit of detection for the Voyager camera. Uranus' rings range in width from about 100 km. (60 mi.) at the widest part of the Epsilon ring, to only a few kilometers for most of the others. this iamge was processed to enhance narrow features; the bright dots are imperfections on the camera detector. The resolution scale is about 50 km. (30 mi.) ARC-1986-A86-7011

Range : 2.52 million miles (1.56 million miles) P-29481B/W Voyager 2 r...

Range : 2.52 million miles (1.56 million miles) P-29481B/W Voyager 2 returned this photograph with all nine known Uranus rings visible from a 15 sec. exposure through the narrow angle camera. The rings are quit... More

P-29516 BW Range: 125, 000 kilometers (78,000 miles) Voyager 2's wide-angle camera captured this view of the outer part of the Uranian ring system just 11 minutes before passing though the ring plane. The resolution in this clear-filter view is slightly better than 9 km (6 mi). The brightest, outermost ring is known as epsilon. Interior to epsilon lie (from top) the newly discovered 10th ring of Uranus--designated 1986UR1 and barely visible here--and then the delta, gamma and eta rings. ARC-1986-A86-7032

P-29516 BW Range: 125, 000 kilometers (78,000 miles) Voyager 2's wide-...

P-29516 BW Range: 125, 000 kilometers (78,000 miles) Voyager 2's wide-angle camera captured this view of the outer part of the Uranian ring system just 11 minutes before passing though the ring plane. The resol... More

Range : 660,000 km. ( 412,000 miles ) P-34711 This Voyager 2 wide angle photograph shows the shadow of Neptune on the rings. Because Neptune's shadow casts a curved profile on the rings which does not quite reach out to the outermost ring at about 38,000 km. (24,000 miles) from the cloudtops. In this photo, taken through the clear filter at a phase angle of about 135 degrees, the shadow does fall on the inner bright ring ( at about 28,000 km. (18,000 miles) from the cloudtops. The shadow also clearly delineates the radial extent of the broad sheet of material discovered extending from about halfway between the bright rings down to, and perhaps beyond the inner bright ring. A very thin, brighter of the edge of this diffuse sheet can also be seen. additional information from other images indicates that this faint material extends further in, to at least the position of the innermost faint ring discovered at about 17,000 km (11,000 mi.) from the cloudtops. ARC-1989-A89-7047

Range : 660,000 km. ( 412,000 miles ) P-34711 This Voyager 2 wide ang...

Range : 660,000 km. ( 412,000 miles ) P-34711 This Voyager 2 wide angle photograph shows the shadow of Neptune on the rings. Because Neptune's shadow casts a curved profile on the rings which does not quite re... More

A close up of a tree with peeling bark. Tree bark woody, backgrounds textures.

A close up of a tree with peeling bark. Tree bark woody, backgrounds t...

Bark of a tree, nature, tree, bark, hq photo / Bark of a tree, close up - public domain macro photography.