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Addition Date Target Mission InstrumentSort Descending Size
Add Image to Favorite List 1996-06-03 Io Voyager
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NASA's Voyager 1 image of Io showing active plume of Loki on limb. Heart-shaped feature southeast of Loki consists of fallout deposits from active plume Pele.
PIA00010:
Io with Loki Plume on Bright Limb
Full Resolution:     TIFF (1.65 MB)     JPEG (50.29 kB)
Add Image to Favorite List 1996-01-29 Io Voyager
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These photos of the four Galilean satellites of Jupiter were taken by NASA's Voyager 1 during its approach to the planet in early March 1979. Io, Europa, Ganymede, and Callisto are shown in their correct relative sizes.
PIA00012:
Galilean Satellites
Full Resolution:     TIFF (2.14 MB)     JPEG (74.25 kB)
Add Image to Favorite List 1999-08-31 Io Voyager
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This photograph of Jupiter's satellite Io taken by NASA's Voyager 1 shows what appears to be a volcanic caldera that is venting gasses (the bright blue patch at left center).
PIA00021:
Volcanic Caldera on Io
Full Resolution:     TIFF (1.235 MB)     JPEG (42.41 kB)
Add Image to Favorite List 1998-06-04 Io Voyager
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NASA's Voyager 1 computer color mosaics, shown in approximately natural color and in Lambertian equal-area projections, show the Eastern (left) and Western (right) hemispheres of Io.
PIA00318:
Io Shown in Lambertian Equal Area Projection and in Approximately Natural Color
Full Resolution:     TIFF (8.241 MB)     JPEG (259.1 kB)
Add Image to Favorite List 1998-06-04 Io Voyager
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Io's volcanic plains are shown in NASA's Voyager 1 image mosaic which covers the area roughly from latitude 60 deg N. to latitude 60 deg S. and longitude 100-345. Numerous volcanic calderas, lava flows, and volcanic eruption plumes are visible here.
PIA00319:
Global Mercator Mosaic
Full Resolution:     TIFF (8.191 MB)     JPEG (209.7 kB)
Add Image to Favorite List 1998-06-04 Io Voyager
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Io's volcanic plains are shown in this image mosaic from NASA's Voyager 1. Also visible are numerous volcanic calderas and lava flows. Ra Patera with its multihued lava flows is below and right of the mosaic's center.
PIA00321:
Io, the Ra Patera, Mazda Catena, and Gibil Patera Area
Full Resolution:     TIFF (2.485 MB)     JPEG (92.7 kB)
Add Image to Favorite List 1998-06-04 Io Voyager
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The eruption of Pele on Jupiter's moon Io. The volcanic plume rises 300 kilometers above the surface in an umbrella-like shape. This image is from NASA's Voyager 1.
PIA00323:
Eruption of Pele
Full Resolution:     TIFF (8.268 MB)     JPEG (268 kB)
Add Image to Favorite List 1998-06-04 Io Voyager
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Io's volcanic plains are shown in this image from NASA's Voyager 1 taken in 1998. Also visible are numerous volcanic calderas and two large mountains (Euboea Montes, just above 

center, and Haemus Montes, at lower left).
PIA00328:
Io, Showing Volcanic Plains and Mountains
Full Resolution:     TIFF (1.445 MB)     JPEG (51.48 kB)
Add Image to Favorite List 1998-11-02 Io Voyager
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The South Polar region of Jupiter's moon Io, seen by NASA's Voyager 1 as it passed beneath in the early 1980s.
PIA01485:
South Polar Region of Io
Full Resolution:     TIFF (8.229 MB)     JPEG (257.5 kB)
Add Image to Favorite List 1999-05-08 Io Voyager
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NASA'S Voyager 2 shows that Io's volcanos continually resurface it, so that any impact craters have disappeared.
PIA01530:
Volcanic Activity on Io
Full Resolution:     TIFF (3.3 MB)     JPEG (174.6 kB)
Add Image to Favorite List 1998-07-02 Io Galileo
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During its 14th orbit of Jupiter in March 29, 1998, NASA's Galileo spacecraft captured an image of Jupiter's moon, Io, that has the same lighting geometry that will exist during Io's close Io flyby on October 11, 1999 (the 24th orbit).
PIA01605:
Io imaging during Galileo's 24th orbit
Full Resolution:     TIFF (512 kB)     JPEG (91.06 kB)
Add Image to Favorite List 2000-06-08 Io Voyager
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Perhaps the most spectacular of all the Voyager photos of Io is this mosaic obtained by NASA's Voyager 1 on March 5 at a range of 400,000 kilometers.
PIA02294:
Io 2x2 Mosaic
Full Resolution:     TIFF (5.675 MB)     JPEG (145.5 kB)
Add Image to Favorite List 1999-12-17 Io Galileo
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This false-color infrared image of the Sunlit disk of Jupiter's moon Io was taken at the NASA Infrared Telescope Facility at Mauna Kea, Hawaii, a few hours after a November 25, 1999 close Io flyby by NASA's Galileo spacecraft.
PIA02522:
Earth-Based Observations of a Fire Fountain on Io
Full Resolution:     TIFF (58.53 kB)     JPEG (12.82 kB)
Add Image to Favorite List 1999-12-17 Io Galileo
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These false-color images of Io and Jupiter were taken with the NASA Infrared Telescope Facility at Mauna Kea, Hawaii, as part of a campaign to support closeup Io observations by NASA's Galileo spacecraft.
PIA02523:
Earth-based images of the Fall 1999 Loki Eruption
Full Resolution:     TIFF (162.4 kB)     JPEG (13.14 kB)
Add Image to Favorite List 1999-12-17 Io Galileo
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Like a terrestrial weather map, this map made by the photopolarimeter-radiometer onboard NASA's Galileo spacecraft shows how temperatures vary across the surface of Jupiter's moon Io. In this case temperatures are due to volcanic activity, not weather.
PIA02524:
Galileo PPR Temperature Maps of Loki in October 1999
Full Resolution:     TIFF (140.3 kB)     JPEG (61.33 kB)
Add Image to Favorite List 2011-05-12 Io Galileo
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This graphic shows the internal structure of Jupiter's moon Io as revealed by data from NASA's Galileo spacecraft. Io is bathed in magnetic field lines (shown in blue) that connect the north polar region of Jupiter to the planet's south polar region.
PIA14116:
Io's "Sounding Signal" Animation Icon
Full Resolution:     TIFF (8.26 MB)     JPEG (320.2 kB)
Add Image to Favorite List 2013-04-04 Io 963x913x3
This map shows predicted heat flow at the surface of Jupiter's moon Io from two tidal-heating models. Red indicates areas where more heat is expected; blue where less heat is expected.
PIA16941:
Io Predicted Heat Flow Map
Full Resolution:     TIFF (2.639 MB)     JPEG (126.6 kB)
Add Image to Favorite List 1996-01-02 Io Galileo
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Artist's rendering of NASA's Galileo spacecraft flying past Jupiter's moon Io. Galileo made multiple close approaches to the volcanically active moon during its time at Jupiter.
PIA18176:
Galileo Over Io (Artist's Concept)
Full Resolution:     TIFF (21.91 MB)     JPEG (597.6 kB)
Add Image to Favorite List 2014-08-04 Io Gemini North Telescope
W. M. Keck Observatory
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These images show Jupiter's moon Io obtained at different infrared wavelengths with the W. M. Keck Observatory's 10-meter Keck II telescope on Aug. 15, 2013 (a-c), and the Gemini North telescope on Aug. 29, 2013 (d).
PIA18656:
Eruptions on Io
Full Resolution:     TIFF (2.431 MB)     JPEG (61.14 kB)
Add Image to Favorite List 2014-08-04 Io Gemini North Telescope
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This Aug. 29, 2013, outburst on Io was among the largest ever observed on the most volcanically active body in the solar system. The infrared was image taken by Gemini North telescope.
PIA18657:
Bright Outburst on Io
Full Resolution:     TIFF (624.1 kB)     JPEG (9.812 kB)
Add Image to Favorite List 1998-06-04 Io Voyager
Imaging Science Subsystem
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A huge area of Io's volcanic plains is shown in this archival image mosaic from NASA's Voyager 1. Numerous volcanic calderas and lava flows are visible here. Loki Patera, an active lava lake, is the large shield-shaped black feature.
PIA00320:
Loki Patera
Full Resolution:     TIFF (3.631 MB)     JPEG (156.6 kB)
Add Image to Favorite List 1998-06-04 Io Voyager
Imaging Science Subsystem
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Io's volcanic plains are shown in this archival image from NASA's Voyager 1, which spans an area about 1030 km (640 miles) from left to right. Numerous volcanic calderas and lava flows are visible.
PIA00324:
Volcanic Plains of Io Near Galai Patera
Full Resolution:     TIFF (2.732 MB)     JPEG (150.1 kB)
Add Image to Favorite List 1998-06-04 Io Voyager
Imaging Science Subsystem
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This archival image mosaic from NASA's Voyager 1 shows Io's south polar region. The South Pole is near the terminator (line between daylight and night) at right center. Haemus Mons, a 10-km high (32,000 foot) mountain is at bottom.
PIA00327:
Io, the South Polar Region
Full Resolution:     TIFF (8.014 MB)     JPEG (297.8 kB)
Add Image to Favorite List 2001-05-31 Io Cassini-Huygens
Imaging Science Subsystem
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During an eclipse of Jupiter's moon Io on January 1, 2001, NASA's Cassini spacecraft recorded glows from auroras and volcanoes on Io.
PIA03450:
Io Color Eclipse Movie Animation Icon
Full Resolution:
Add Image to Favorite List 2023-05-15 Io Juno
JIRAM
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These infrared views of volcanic activity of Jupiter's moon Io were collected by the JIRAM (Jovian Infrared Auroral Mapper) instrument aboard NASA's Juno spacecraft during a flyby of the moon on Oct. 16, 2021.
PIA25886:
4 Looks at Io Volcanoes
Full Resolution:     TIFF (530.1 kB)     JPEG (30.38 kB)
Add Image to Favorite List 2018-07-13 Io Juno
JIRAM
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This infrared image of the southern hemisphere of Jupiter's moon Io was derived from data collected by the Jovian Infrared Auroral Mapper (JIRAM) instrument aboard NASA's Juno spacecraft on Dec. 16, 2017.
PIA22599:
Jupiter Moon Io in Infrared Animation Icon
Full Resolution:     TIFF (3.783 MB)     JPEG (170.1 kB)
Add Image to Favorite List 2018-07-13 Io Juno
JIRAM
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This annotated image highlights the location of the new heat source in the southern hemisphere of the Jupiter moon Io derived from data collected by the Jovian Infrared Auroral Mapper (JIRAM) instrument aboard NASA's Juno spacecraft on Dec. 16, 2017.
PIA22600:
Io's New Southern Hemisphere Hotspot
Full Resolution:     TIFF (3.787 MB)     JPEG (180.8 kB)
Add Image to Favorite List 2018-07-13 Io Juno
JIRAM
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This annotated image highlights the location of the new heat source close to the south pole of Io. The image was generated from data collected on Dec. 16, 2017, by the JIRAM instrument aboard NASA's Juno NASA's Juno spacecraft on Dec. 16, 2017.
PIA22601:
Location of Io's New Hotspot
Full Resolution:     TIFF (4.031 MB)     JPEG (210.6 kB)
Add Image to Favorite List 2022-12-14 Io Juno
JIRAM
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The volcano-laced surface of Jupiter's moon Io was captured in infrared by the Juno spacecraft's Jovian Infrared Auroral Mapper (JIRAM) imager on July 5, 2022.
PIA25698:
Jupiter's Moon Io Seen in Infrared Light
Full Resolution:     TIFF (1.739 MB)     JPEG (86.1 kB)
Add Image to Favorite List 2023-05-15 Io Juno
JunoCam
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This JunoCam image of the Jovian moon Io was collected during Juno's flyby of the moon on March 1, 2023. At the time of closest approach, Juno was about 32,000 miles (51,500 kilometers) away from Io.
PIA25885:
Juno Getting Closer to Jovian Moon Io
Full Resolution:     TIFF (364 kB)     JPEG (20.62 kB)
Add Image to Favorite List 2023-05-15 Io Juno
JunoCam
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This composite image of Io was generated using data collected by the JunoCam imager aboard NASA's Juno spacecraft during four flybys of the Jovian moon.
PIA25887:
4 JunoCam Views of Jovian Moon Io
Full Resolution:     TIFF (3.972 MB)     JPEG (96.66 kB)
Add Image to Favorite List 2023-05-15 Io Juno
JunoCam
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These composite views depicting volcanic activity on Io were generated using both visible light and infrared data collected by NASA's Juno spacecraft during flybys of the Jovian moon on Dec. 14, 2022 (left) and March 1, 2023.
PIA25888:
Io in Color and Infrared
Full Resolution:     TIFF (2.025 MB)     JPEG (68.16 kB)
Add Image to Favorite List 2023-07-26 Io Juno
JunoCam
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At top and bottom right, JunoCam images taken in May 2023 of Jupiter's moon Io show lava fields surrounding volcanoes Volund A and B appear to be growing in size.
PIA25964:
Io Over the Years
Full Resolution:     TIFF (6.142 MB)     JPEG (235.3 kB)
Add Image to Favorite List 2023-12-22 Io Juno
JunoCam
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This image revealing the north polar region of the Jovian moon Io was taken on June 15 by NASA's Juno. Three of the mountain peaks visible in the upper part of image were observed here for the first time by the spacecraft's JunoCam.
PIA26234:
Imaging Io's Volcanos With JunoCam
Full Resolution:     TIFF (11.65 MB)     JPEG (570 kB)
Add Image to Favorite List 2023-12-22 Io Juno
JunoCam
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This JunoCam image of Jupiter's moon Io captures a plume of material ejected from the (unseen) volcano Prometheus. The image was taken by NASA's Juno spacecraft on June 15, 2023.
PIA26235:
Io Plume Captured by JunoCam
Full Resolution:     TIFF (2.358 MB)     JPEG (89.66 kB)
Add Image to Favorite List 2007-10-09 Io New Horizons
LEISA
LORRI
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A global map of Jupiter's moon Io derived from eight images taken by the Long Range Reconnaissance Imager (LORRI) on the New Horizons spacecraft, as it passed Jupiter on its way to Pluto in late February 2007.
PIA10099:
Changes on Io
Full Resolution:     TIFF (2.028 MB)     JPEG (81.55 kB)
Add Image to Favorite List 2007-10-09 Io New Horizons
LEISA
LORRI
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New Horizons took this montage of images of Jupiter's volcanic moon Io, glowing in the dark of Jupiter's shadow, as the Pluto-bound spacecraft sped through the Jupiter system on Feb. 27, 2007.
PIA10100:
Io Eclipse Montage
Full Resolution:     TIFF (1.671 MB)     JPEG (106.4 kB)
Add Image to Favorite List 2007-05-01 Io New Horizons
LEISA
LORRI
MVIC
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This montage demonstrates New Horizons' ability to observe the same target in complementary ways using its diverse suite of instruments.
PIA09358:
Io Through Different 'Eyes'
Full Resolution:     TIFF (18.23 MB)     JPEG (289.4 kB)
Add Image to Favorite List 2007-10-09 Io New Horizons
LEISA
LORRI
MVIC
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This is a montage of New Horizons images of Jupiter and its volcanic moon Io, taken during the spacecraft's Jupiter flyby in early 2007.
PIA10102:
Jupiter-Io Montage
Full Resolution:     TIFF (29.19 MB)     JPEG (232.7 kB)
Add Image to Favorite List 2007-10-16 Io New Horizons
LEISA
MVIC
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This beautiful image of the crescents of volcanic Io and more sedate Europa is a combination of two New Horizons images taken March 2, 2007, about two days after New Horizons made its closest approach to Jupiter.
PIA10103:
Io and Europa Meet Again
Full Resolution:     TIFF (1.074 MB)     JPEG (9.716 kB)
Add Image to Favorite List 2007-04-02 Io New Horizons
LORRI
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An Eruption on Io
PIA09244:
An Eruption on Io
Full Resolution:     TIFF (128.4 kB)     JPEG (9.155 kB)
Add Image to Favorite List 2007-04-02 Io New Horizons
LORRI
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Tvashtar's Plume
PIA09248:
Tvashtar's Plume
Full Resolution:     TIFF (176.8 kB)     JPEG (13.89 kB)
Add Image to Favorite List 2007-04-02 Io New Horizons
LORRI
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A Brilliant Plume
PIA09250:
A Brilliant Plume
Full Resolution:     TIFF (246.5 kB)     JPEG (40.15 kB)
Add Image to Favorite List 2007-05-01 Io New Horizons
LORRI
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Io in Eclipse
PIA09353:
Io in Eclipse
Full Resolution:     TIFF (116.6 kB)     JPEG (23.11 kB)
Add Image to Favorite List 2007-05-01 Io New Horizons
LORRI
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Io in Eclipse 2
PIA09354:
Io in Eclipse 2
Full Resolution:     TIFF (32.3 kB)     JPEG (3.46 kB)
Add Image to Favorite List 2007-05-01 Io New Horizons
LORRI
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Tvashtar Movie
PIA09357:
Tvashtar Movie Animation Icon
Full Resolution:     TIFF (183.9 kB)     JPEG (7.658 kB)
Add Image to Favorite List 2007-05-01 Io New Horizons
LORRI
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Variations in the appearance of the giant plume from the Tvashtar volcano on Jupiter's moon Io are seen in this composite of the best photos taken by the New Horizons Long Range Reconnaissance Imager (LORRI) during its Jupiter flyby in late February.
PIA09359:
Tvashtar Composite
Full Resolution:     TIFF (340.5 kB)     JPEG (20.64 kB)
Add Image to Favorite List 2007-05-01 Io New Horizons
LORRI
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New Horizons took this image of Jupiter's volcanic moon Io with its Long Range Reconnaissance Imager (LORRI) at 15:15 Universal Time on February 28, 2007, nearly 10 hours after the spacecraft's closest approach to Jupiter.
PIA09360:
A "Plumefall" on Io
Full Resolution:     TIFF (158.8 kB)     JPEG (12.02 kB)
Add Image to Favorite List 2007-05-14 Io New Horizons
LORRI
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This five-frame sequence of New Horizons images captures the giant plume from Io's Tvashtar volcano. These were snapped by the probe's Long Range Reconnaissance Imager (LORRI) as the spacecraft flew past Jupiter earlier this year.
PIA09665:
Tvashtar in Motion Animation Icon
Full Resolution:     TIFF (262.6 kB)     JPEG (21.13 kB)
Add Image to Favorite List 2007-05-01 Io New Horizons
LORRI
Solid-State Imaging
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Io Surface Changes
PIA09355:
Io Surface Changes
Full Resolution:     TIFF (18.23 MB)     JPEG (261.5 kB)
Add Image to Favorite List 2007-10-09 Io New Horizons
LORRI
Ultraviolet Light
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The Tvashtar plume on Io, seen by the Hubble Space Telescope (HST) and by New Horizons.
PIA10101:
Tvashtar Montage
Full Resolution:     TIFF (1.09 MB)     JPEG (63.22 kB)
Add Image to Favorite List 2007-04-02 Io New Horizons
MVIC
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A Burst of Color
PIA09254:
A Burst of Color
Full Resolution:     TIFF (176 kB)     JPEG (3.888 kB)
Add Image to Favorite List 2007-04-17 Io New Horizons
MVIC
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The Colors of the Night
PIA09264:
The Colors of the Night
Full Resolution:     TIFF (230.9 kB)     JPEG (6.903 kB)
Add Image to Favorite List 2008-02-28 Io New Horizons
MVIC
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This New Horizons image of Jupiter's volcanic moon Io was taken at 13:05 Universal Time during the spacecraft's Jupiter flyby on February 28, 2007. It shows the reddish color of the deposits from the giant volcanic eruption at the volcano Tvashtar.
PIA10249:
Seeing Red
Full Resolution:     TIFF (540.8 kB)     JPEG (8.52 kB)
Add Image to Favorite List 1998-03-26 Io Galileo
Near Infrared Mapping Spectrometer
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Hotspots are seen in the vicinity of Prometheus, Volund and Marduk, all sites of volcanic plume activity during NASA's Galileo encounter in 1996.
PIA00520:
NIMS: hotspots on Io during G2
Full Resolution:     TIFF (541 kB)     JPEG (103.4 kB)
Add Image to Favorite List 1998-03-26 Io Galileo
Near Infrared Mapping Spectrometer
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NASA's Galileo spacecraft's Near Infrared Mapping Spectrometer (NIMS) shows the distribution of volcanic hotspots on the surface of Io during the G! encounter on June 29, 1996.
PIA00835:
NIMS Observation of Hotspots on Io
Full Resolution:     TIFF (178 kB)     JPEG (74.71 kB)
Add Image to Favorite List 1998-03-26 Io Galileo
Near Infrared Mapping Spectrometer
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NASA's Galileo spacecraft imaged Io at high spectral resolution during the G2 encounter on Sept. 6, 1996.
PIA00836:
Hotspots on Io During the Ganymede 2 Encounter
Full Resolution:     TIFF (460.5 kB)     JPEG (86.37 kB)
Add Image to Favorite List 1998-03-26 Io Galileo
Near Infrared Mapping Spectrometer
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Sulfur dioxide, normally a gas at room temperatures, is known to exist on Io's surface as a frost, condensing there from the hot gases emanating from the Io volcanoes. This image was taken in 1996 by NASA's Galileo spacecraft.
PIA00841:
Distribution of Sulfur Dioxide Frost on Io
Full Resolution:     TIFF (173.2 kB)     JPEG (60.06 kB)
Add Image to Favorite List 1998-03-26 Io Galileo
Near Infrared Mapping Spectrometer
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This is an image of Io, taken by NASA's Galileo spacecraft during the G2 encounter in September 1996. This is a dayside image of Io (on the right) against the clouds of Jupiter (the blue background).
PIA00845:
NIMS: hotspots on Io during G2 (continued)
Full Resolution:     TIFF (632.6 kB)     JPEG (108.9 kB)
Add Image to Favorite List 1998-03-26 Io Galileo
Near Infrared Mapping Spectrometer
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On Feb. 21, 1997, the Galileo spacecraft observed Io in daylight from a range of approximately 703,000 km (440,000 miles). Loki Patera, historically the most active and persistent hot spot on Io, is located on the hemisphere of Io always facing Jupiter.
PIA00856:
NIMS Observes Increased Activity at Loki Patera, Io
Full Resolution:     TIFF (912.3 kB)     JPEG (40.86 kB)
Add Image to Favorite List 1998-03-26 Io Galileo
Near Infrared Mapping Spectrometer
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NASA's Galileo spacecraft observed Io on nearly every orbit as part of a program monitoring the level of volcanic activity on this moon. Io is the most volcanically active body in the Solar System.
PIA00899:
New Hot Spot on Io Discovered by NIMS During Orbit C9
Full Resolution:     TIFF (783.9 kB)     JPEG (130.5 kB)
Add Image to Favorite List 1998-03-26 Io Galileo
Near Infrared Mapping Spectrometer
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NASA's Galileo spacecraft obtained this image of half of Io's disk in darkness on Sept. 19, 1997.
PIA01226:
Two New Hot Spots on Io
Full Resolution:     TIFF (307.3 kB)     JPEG (67.14 kB)
Add Image to Favorite List 1999-11-04 Io Galileo
Near Infrared Mapping Spectrometer
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The active volcano Prometheus on Jupiter's moon Io was imaged by NASA's Galileo spacecraft during the close flyby of Io on Oct.10, 1999. The spectrometer can detect active volcanoes on Io by measuring their heat in the near-infrared wavelengths.
PIA02509:
Galileo's Near-Infrared Mapping Spectrometer Detects Active Lava Flows at Prometheus Volcano, Io
Full Resolution:     TIFF (67.96 kB)     JPEG (35 kB)
Add Image to Favorite List 1999-11-19 Io Galileo
Near Infrared Mapping Spectrometer
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This image shows Loki, the most powerful volcano in the solar system, which has been constantly active on Jupiter's moon Io. NASA's Galileo spacecraft took these images during its approach to Io on October 10, 1999.
PIA02514:
Loki as viewed by Galileo NIMS
Full Resolution:     TIFF (638.9 kB)     JPEG (92.45 kB)
Add Image to Favorite List 1999-11-19 Io Galileo
Near Infrared Mapping Spectrometer
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This image shows the region around the Prometheus volcano on Jupiter's moon Io. It was observed by NASA's Galileo spacecraft in 1996 as it was flying away from a close approach to Io.
PIA02515:
Io's Prometheus Regions as Viewed by Galileo NIMS
Full Resolution:     TIFF (870 kB)     JPEG (76.75 kB)
Add Image to Favorite List 1999-11-19 Io Galileo
Near Infrared Mapping Spectrometer
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This image is the highest-resolution thermal, or heat image, ever made of Amirani, a large volcano on Jupiter's moon Io. It was taken on Oct. 10, 1999, by NASA's Galileo spacecraft. Amirani is on the side of Io that permanently faces away from Jupiter.
PIA02516:
Galileo NIMS Observes Amirani
Full Resolution:     TIFF (274.2 kB)     JPEG (34.6 kB)
Add Image to Favorite List 1999-12-17 Io Galileo
Near Infrared Mapping Spectrometer
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A very active volcano on Jupiter's moon Io, probably composed of erupting lava fountains, was seen by NASA's Galileo spacecraft.
PIA02521:
Eruption from High Latitude Caldera Viewed by the Near-Infrared Mapping Spectrometer (NIMS)
Full Resolution:     TIFF (482.4 kB)     JPEG (46.98 kB)
Add Image to Favorite List 2000-05-18 Io Galileo
Near Infrared Mapping Spectrometer
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This image of Loki Patera on Jupiter's volcanic moon Io shows data taken by the near-infrared mapping spectrometer onboard NASA's Galileo spacecraft during its Io flyby on Oct. 10, 1999.
PIA02541:
Loki Patera/NIMS
Full Resolution:     TIFF (639.3 kB)     JPEG (78.9 kB)
Add Image to Favorite List 2000-05-18 Io Galileo
Near Infrared Mapping Spectrometer
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Volcanic 'hot spots' are seen in this color temperature map of the Prometheus volcano on Jupiter's moon Io created with data obtained by NASA's Galileo and Voyager spacecraft.
PIA02542:
Prometheus/NIMS
Full Resolution:     TIFF (1.242 MB)     JPEG (29.71 kB)
Add Image to Favorite List 2000-05-18 Io Galileo
Near Infrared Mapping Spectrometer
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The Prometheus region of Jupiter's moon Io was imaged by NASA's Galileo spacecraft in 1999. The maps made from spectrometer data show the interplay between hot silicates on the surface and sulfur dioxide frost.
PIA02543:
Prometheus Silicates/Sulfur dioxide/NIMS
Full Resolution:     TIFF (4.722 MB)     JPEG (347.4 kB)
Add Image to Favorite List 2000-05-18 Io Galileo
Near Infrared Mapping Spectrometer
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The Culann Patera volcano on Jupiter's moon Io was observed by the near-infrared mapping spectrometer instrument onboard NASA's Galileo spacecraft during its Io flyby on Nov. 25, 1999.
PIA02544:
Culann Patera/NIMS
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Add Image to Favorite List 2000-05-18 Io Galileo
Near Infrared Mapping Spectrometer
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This is the first-ever map of temperatures over large areas of Io's night-side, obtained with the photopolarimeter-radiometer instrument onboard NASA's Galileo spacecraft during flybys of Io in November 1999 and February 2000.
PIA02548:
Temperature Map of Io's Night Side
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Add Image to Favorite List 2000-05-18 Io Galileo
Near Infrared Mapping Spectrometer
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This image compares temperatures at the volcano Loki, the most powerful volcano on Io, seen by the photopolarimeter-radiometer instrument onboard NASA's Galileo spacecraft during its October 1999 flyby of Jupiter's moon Io, and its February 2000 flyby.
PIA02549:
Temperature Comparison at Loki
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Add Image to Favorite List 2000-05-31 Io Galileo
Near Infrared Mapping Spectrometer
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Changes in the volcanoes on Jupiter's moon Io can be seen in these three views, taken by NASA's Galileo spacecraft during its three flybys of Io in October 1999, November 1999 and February 2000.
PIA02558:
Myriad of Hot Spots on Io
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Add Image to Favorite List 2000-05-31 Io Galileo
Near Infrared Mapping Spectrometer
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This image shows the Chaac region, on Jupiter's moon Io, viewed by two instruments on NASA's spacecraft Galileo during the flyby on February 22, 2000. On the left is an image taken by Galileo's onboard camera.
PIA02559:
Sulphur Dioxide on the Chaac Region of Io
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Add Image to Favorite List 2000-05-31 Io Galileo
Near Infrared Mapping Spectrometer
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Pele, one of Io's best-known volcanoes, was observed by NASA's Galileo spacecraft, during the flyby of Jupiter's moon Io on February 22, 2000.
PIA02560:
Temperature Map of Pele, Io
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Add Image to Favorite List 2001-10-04 Io Galileo
Near Infrared Mapping Spectrometer
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Volcanic hot spots, including a bright one never seen before, pepper an infrared color-coded image (left) of Jupiter's moon Io, taken by NASA's Galileo spacecraft on Aug. 6, 2001.
PIA02591:
Hot Spots on Io
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Add Image to Favorite List 2001-11-27 Io Galileo
Near Infrared Mapping Spectrometer
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New and older lava flows clustered in the Tvashtar region of Jupiter's moon Io appeared as hot spots in a temperature map from NASA's Galileo spacecraft in 1999.
PIA02594:
Io's Tvashtar Area in Infrared: Multiple Lava Flows
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Add Image to Favorite List 2001-11-27 Io Galileo
Near Infrared Mapping Spectrometer
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High temperatures observed by NASA's Galileo spacecraft along the western edge of the Loki volcano on Jupiter's moon Io may indicate freshly exposed material at the shore of a lava lake during an Oct. 16, 2001 flyby of Io.
PIA02595:
Io's Loki in Infrared: Hot Edge
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Add Image to Favorite List 2002-05-28 Io Galileo
Near Infrared Mapping Spectrometer
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The Amirani lava flow on Jupiter's moon Io appears to be made up of many individual flows; the newest flows are the brightest spots in this infrared image from NASA's Galileo spacecraft.
PIA03533:
Amirani Lava Flow on Io
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Add Image to Favorite List 2002-05-28 Io Galileo
Near Infrared Mapping Spectrometer
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Nine previously unknown volcanoes have been discovered from this infrared image of Jupiter's moon Io, acquired by NASA's Galileo spacecraft on Oct. 16, 2001.
PIA03534:
Io in Infrared with Giant Plume's New Hot Spot
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Add Image to Favorite List 2002-05-28 Io Galileo
Near Infrared Mapping Spectrometer
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Hot eruption sites scattered across Jupiter's moon Io stand out dramatically in an infrared image taken Oct. 13, 2001, by NASA's Galileo spacecraft as it sped past this most volcanically active of all known worlds.
PIA03535:
Io in Infrared, Night and Day
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Add Image to Favorite List 2001-12-10 Io Galileo
Near Infrared Mapping Spectrometer
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Tupan Caldera, a volcanic crater on Jupiter's moon Io, has a relatively cool area, possibly an island, in its center, as indicated by infrared imagery from NASA's Galileo spacecraft during an Oct. 16, 2001 flyby.
PIA03601:
Io's Tupan Caldera in Infrared
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Add Image to Favorite List 2001-12-10 Io Galileo
Near Infrared Mapping Spectrometer
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In August 2001, NASA's Galileo spacecraft has returned imagery of a hot spot on Jupiter's moon Io that was the source of a towering plume indicating a sulfur-dioxide concentration that may have been fallout from the plume.
PIA03602:
A New Hot Spot on Northern Io
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Add Image to Favorite List 2000-05-18 Io Galileo
Photopolarimeter-Radiometer
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This image depicts the discovery of sulfur gas in the plume of the Pele volcano on Jupiter's moon Io, as seen by the Hubble Space Telescope in October 1999, during a flyby of Io by NASA's Galileo spacecraft.
PIA02546:
Sulfur Gas in Pele's Plume
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Add Image to Favorite List 2000-05-18 Io Galileo
Photopolarimeter-Radiometer
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Ideas about the role of sulfur in volcanoes on Jupiter's moon Io are illustrated. Sulfur gas consisting of pairs of sulfur atoms (S2), detected above Io's volcano Pele by the Hubble Space Telescope, is ejected from the hot vents of Io's volcanoes.
PIA02547:
The Role of Sulfur in Io's Volcanoes
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Add Image to Favorite List 2001-06-22 Io Galileo
Photopolarimeter-Radiometer
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Powerful volcanoes and the previous day's sunshine warm the nighttime surface of Jupiter's moon Io, as seen in this image from NASA's Galileo spacecraft. The left-hand frame shows the best view that Galileo has yet provided of Io's nighttime temperatures.
PIA02589:
Io's Nighttime Heat
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Add Image to Favorite List 2001-12-10 Io Galileo
Photopolarimeter-Radiometer
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Nighttime temperatures in the southern hemisphere of Jupiter's moon Io, mapped here with data from NASA's Galileo spacecraft, give hints about the textures of surface materials, as well as the locations of volcanic hot spots.
PIA03603:
Nighttime Temperatures on Southern Io
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Add Image to Favorite List 1997-09-07 Io Galileo
Solid-State Imaging
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Volcanic hot spots and auroral emissions glow on the darkside of Jupiter's moon Io in the image at left. The image was taken by the camera onboard NASA's Galileo spacecraft on 29 June, 1996 UT while Io was in Jupiter's shadow.
PIA00274:
Io Glowing in the Dark
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Add Image to Favorite List 1997-09-08 Io Galileo
Solid-State Imaging
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The mottled face of Jupiter's volcanically active moon Io as viewed by NASA's Galileo spacecraft.
PIA00282:
Io - Full Disk Centered on Media Regio
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Add Image to Favorite List 1997-09-08 Io Galileo
Solid-State Imaging
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Three full-disk color views of Jupiter's volcanic moon Io as seen by NASA's Galileo spacecraft are shown in enhanced color to highlight details of the surface.
PIA00292:
Three Views of Io
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Add Image to Favorite List 1997-09-10 Io Galileo
Solid-State Imaging
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This image, taken by NASA's Galileo spacecraft, shows a blue-colored volcanic plume consistent with the presence of sulfur dioxide gas and 'snow' condensing from the gas as the plume expands and cools.
PIA00293:
Eruption on Io
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Add Image to Favorite List 1997-09-07 Io Galileo
Solid-State Imaging
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Five color views of Jupiter's moon Io, as seen by NASA's Galileo spacecraft camera, were taken between the 25th and the 29th of June, 1996.
PIA00491:
Five Color Views of Io
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Add Image to Favorite List 1997-11-18 Io Galileo
Solid-State Imaging
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Io, the most volcanic body in the solar system, is seen in front of Jupiter's cloudy atmosphere in this image taken Sept. 7, 1996, by NASA's Galileo spacecraft, now orbiting the giant planet.
PIA00494:
Io in front of Jupiter
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Add Image to Favorite List 1997-11-18 Io Galileo
Solid-State Imaging
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Volcanoes on Jupiter's moon Io are compared in these images from NASA's Galileo spacecraft (right) taken in early September of this year, and from the Voyager spacecraft (left) taken in 1979.
PIA00495:
Changing volcanoes on Io
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Add Image to Favorite List 1997-12-18 Io Galileo
Solid-State Imaging
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Shown here is a highest-resolution image of Io (Latitude: -60 to +20 degrees, Longitude: 150 to 230 degrees) acquired by NASA's Galileo spacecraft, revealing a great variety of landforms.
PIA00536:
Geologic Landforms on Io
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Add Image to Favorite List 1997-12-18 Io Galileo
Solid-State Imaging
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Shown here is a portion of a high-resolution image of Io (Latitude: +10 to +60 degrees, Longitude: 180 to 225 degrees) acquired by NASA's Galileo spacecraft, revealing immense lava flows and other volcanic landforms.
PIA00537:
Volcanically Active Regions on Io
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Add Image to Favorite List 1997-12-18 Io Galileo
Solid-State Imaging
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Io, the most volcanic body in the solar system is seen in the highest resolution obtained to date [Sept.7 & Nov. 6, 1996] by NASA's Galileo spacecraft.
PIA00583:
High Resolution Global View of Io
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Add Image to Favorite List 1998-03-06 Io Galileo
Solid-State Imaging
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These full disk views of Jupiter's volcanic moon, Io, use images which were acquired by NASA's Galileo spacecraft on Dec. 18, 1996, when Io, the spacecraft, and the sun were nearly all aligned (near zero degrees phase angle).
PIA00584:
Global View of Io in various colors
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Add Image to Favorite List 1997-11-18 Io Galileo
Solid-State Imaging
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This false color infrared composite of Jupiter's moon Io was produced from images acquired in July and September, 1996, during the first two orbits through the Jovian system by NASA's Galileo spacecraft.
PIA00585:
Color Global Mosaic of Io
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