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Range : 12.2 million kilometers (7.6 million miles) This images shows Jupiter's Great Red Spot emerging from the five-hour Jovian night. One of three bright, oval clouds which were observed to form approx. 40 years ago can be seen below the Red Spot. Most other features appearing in this view are too small to be seen clearly from Earth. This black and white photo was taken through a violet filter. ARC-1979-A79-7024

Range : 12.2 million kilometers (7.6 million miles) This images shows ...

Range : 12.2 million kilometers (7.6 million miles) This images shows Jupiter's Great Red Spot emerging from the five-hour Jovian night. One of three bright, oval clouds which were observed to form approx. 40 ... More

Range : 9.2 million kilometers (3.7 million miles) This photo shows Jupiter's Great Red Spot and its surroundings. Shown is cloud detail that is 100 miles (160 km) across. The colorful, wavy cloud pattern to the left of the Red Spot is a region of complex and variable wave motion. Photo taken through a violet filter. ARC-1979-A79-7025

Range : 9.2 million kilometers (3.7 million miles) This photo shows Ju...

Range : 9.2 million kilometers (3.7 million miles) This photo shows Jupiter's Great Red Spot and its surroundings. Shown is cloud detail that is 100 miles (160 km) across. The colorful, wavy cloud pattern to ... More

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

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 : 5.9 million kilometers (3.66 million miles) Europa is Jupiter's 2nd Galilean satellite from the planet. Photo taken early morning and through a violet filter. Faint swirls and Linear Patterns show in the equarorial region(which is darker than the poles). The hemisphere shown always faces Jupiter. North is up. Europa is the brightest of the Galilian satellites but shows low contrast on this hemisphere. Density and size is similar to Earth's Moon. Indications of water ice or ground water on surface is shown ARC-1979-A79-7018

Range : 5.9 million kilometers (3.66 million miles) Europa is Jupiter'...

Range : 5.9 million kilometers (3.66 million miles) Europa is Jupiter's 2nd Galilean satellite from the planet. Photo taken early morning and through a violet filter. Faint swirls and Linear Patterns show in ... More

Europa, taken from Voyager 1 to Jupiter

Europa, taken from Voyager 1 to Jupiter

Range : 5.9 million kilometers (3.66 million miles) Europa is Jupiter's 2nd Galilean satellites from the planet and the brightest. Photo taken early morning through violet filter. Faint swirls and linear patt... More

Photo by Voyager 2 (jpl) These images show changes in the clouds around Neptune's Great Dark Spot (GDS) over a four and one-half-day period. From top to bottom the images show successive rotations of the planet -- an interval of about 18 hours. The GDS is at a mean latitude of 20 degrees south, and covers about 30 degrees of longitude. The violet filter of the Voyager narrow angle camera was used to produce these images at distances ranging from 17 million kilometers (10.5 million miles) at the top, to 10 million kiloeters (6.2 million miles) at the bottom. The images have been mapped on to a rectangular latitude-longitude grid to remove the effects of changing viewing geometry and the changing distance to Neptune. The sequence shows a large change in the western end (left side) of the GDS, where dark extension apparent in the earlier images converges into an extended string of small dark spots over the next five rotations. This 'string of beads' extends from the GDS a surprisingly large angle relative to horizontal lines of constant latitude. The large bright cloud at the southen (bottom) boarder of the GDS is a more or less permanent companion of the GDS -- reminiscent of flow around the Great Red Spot in Jupiter's atmosphere. This activity of the GDS is surprising because the total energy flux from the sun and from Neptune's interior is only 5 percent as large as the total energy flux on Jupiter. (JPL Ref: P-34610 Voyager 2-N23) ARC-1989-A89-7000

Photo by Voyager 2 (jpl) These images show changes in the clouds aroun...

Photo by Voyager 2 (jpl) These images show changes in the clouds around Neptune's Great Dark Spot (GDS) over a four and one-half-day period. From top to bottom the images show successive rotations of the planet... More

P-34709 Range: 157,000 kilometers (98,000 miles) This Voyager 2 high resolution color image, taken 2 hours before closest approach, provides obvious evidence of vertical relief in Neptune's bright cloud streaks. These clouds were observed at a latitude of 29° N near Neptune's east terminator. The linear cloud forms are stretched approximately along lines of constant latitude and the sun is toward the lower left. The bright sides of the clouds that face the sun are brighter than the surrounding cloud deck because they are more directly exposed to the sun. Shadows can be seen on the side directly opposite the sun. These shadows are less distinct at short wavelengths (violet filter) and more distinct at long wavelengths (orange filter). This can be understood if the underlying cloud deck on which the shadow is cast is at a relatively great depth, in which case scattering by molecules in the overlying atmopsphere will diffuse light into the shadow. Because molecules scatter blue light much more efficiently than red light, the shadows will be darkest at the longest (reddest) wavelengths, and will appear blue under white illumination. The resolution of this image is 11 kilometers (6.8 miles per pixel). The width of the cloud streaks range from 50 to 200 kilometers (31 to 124 miles), and their shadow widths range from 30 to 50 kilometers (18 to 31 miles). Cloud heights appear to be of the order of 50 kilometers (31 miles). This corresponds to 2 scale heights. ARC-1989-AC89-7038

P-34709 Range: 157,000 kilometers (98,000 miles) This Voyager 2 high r...

P-34709 Range: 157,000 kilometers (98,000 miles) This Voyager 2 high resolution color image, taken 2 hours before closest approach, provides obvious evidence of vertical relief in Neptune's bright cloud streaks... More

Range : 1 million miles (1.63 million km) This image of the planet Venus was taken by NASA's Galileo spacecraft shortly befor 10pm PST when the space craft was directly above Venus' equator. This is the 66th of more than 80 Venus images Galileo was programmed to take and record during its Venus flyby. In the picture, cloud features as small as 25 miles (40 km) can be seen. Patches of waves and convective clouds are superimpposed on the swirl of the planet's broad weather patterns, marked by the dark chevron at the center. North is at the top. The several ring-shaped shadows are blemishes, not planetary features. The spacecraft imaging system has a 1500-mm, f/8.5 reflecting telescope; the exposure time was 1/40 second. The image was taken through the violet filter (0.41 micron.). It was produced by the imaging system in digital form, as a set of numbers representing the brightness perceived in each of the 640,000 picture elements defined on the solid-state plate, called a charged-coupled-device or CCD, on which the image was focused. ARC-1990-A91-2000

Range : 1 million miles (1.63 million km) This image of the planet Ve...

Range : 1 million miles (1.63 million km) This image of the planet Venus was taken by NASA's Galileo spacecraft shortly befor 10pm PST when the space craft was directly above Venus' equator. This is the 66th ... More

Range : 1.7 million miles This colorized picture of Venus was taken about 6 days after Galileo's closest approach to the planet. It has been colorized to a bluish hue to emphasize subtle contrasts in the cloud markings and to indicate that it was taken through a violet filter. Features in the sulfuric acid clouds near the top of the planet's atmosphere are most prominent in violet and ultraviolet light. This image shows the east-to-west-trending cloud banding and the brighter polar hoods familiar from past studies of Venus. The features are embedded in winds that flow from east to west at about 230 mph. The smallest features visible are about 45 miles across. An intriguing filamentary dark pattern is seen immediately left of the bright region at the subsolar point (equatorial 'noon'). North is at the top and the evening terminator is to the left. ARC-1990-AC91-2004

Range : 1.7 million miles This colorized picture of Venus was taken a...

Range : 1.7 million miles This colorized picture of Venus was taken about 6 days after Galileo's closest approach to the planet. It has been colorized to a bluish hue to emphasize subtle contrasts in the clou... More

Range : 1.7 million miles This photo of Venus was taken by the Galileo spacecraft's Solid State Imaging System. A high-pass spatial filter has been applied in order to emphasize the smaller-scale cloud features, and the rendition has been colorized to a bluish hue in order to emphasize the subtle contrasts in the cloud markings and to indicate how it was taken through a violet filter. The sulfuric acid clouds indicate considerable convective activity, in the equatorial regions of the planet to the left and downwind of the subsolar point (afternoon on Venus), They are analogous to 'fair weather clouds' on Earth. The filamentary dark features visible in the colorized image are here revealed to be composed of several dark nodules, like strings on a bead, each about 60 miles across. ARC-1990-AC91-2014

Range : 1.7 million miles This photo of Venus was taken by the Galile...

Range : 1.7 million miles This photo of Venus was taken by the Galileo spacecraft's Solid State Imaging System. A high-pass spatial filter has been applied in order to emphasize the smaller-scale cloud featur... More

The Earth and Moon - NASA/JPL Galileo Program Images

The Earth and Moon - NASA/JPL Galileo Program Images

During its flight, the Galileo spacecraft returned images of the Earth and Moon. Separate images of the Earth and Moon were combined to generate this view. The Galileo spacecraft took the images in 1992 on its ... More

Neptune Clouds Showing Vertical Relief

Neptune Clouds Showing Vertical Relief

NASA's Voyager 2 high resolution color image, taken 2 hours before closest approach, provides obvious evidence of vertical relief in Neptune's bright cloud streaks. These clouds were observed at a latitude of 2... More

Mars Schiaparelli Hemisphere, NASA Viking Images

Mars Schiaparelli Hemisphere, NASA Viking Images

This mosaic is composed of about 100 red- and violet- filter Viking Orbiter images, digitally mosaiced in an orthographic projection at a scale of 1 km/pixel. The images were acquired in 1980 during mid norther... More

Mesoscale Waves in Jupiter Atmosphere

Mesoscale Waves in Jupiter Atmosphere

These two images of Jupiter atmosphere were taken with the violet filter of the Solid State Imaging CCD system aboard NASA Galileo spacecraft. Mesoscale waves can be seen in the center of the upper image. The i... More