Exploration Images
Volcanoes on Jupiter’s moon Io, from the Keck & Gemini Observatories, August 2013

Images of Io obtained at different infrared wavelengths (in microns, μm, or millionths of a meter) 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). The bar on the right of each image indicates the intensity of the infrared emission. Note that emissions from the large volcanic outbursts on Aug. 15 at Rarog and Heno Paterae have substantially faded by Aug. 29. A second bright spot is visible to the north of the Rarog and Heno eruptions in c and to the west of the outburst in d. This hot spot was identified as Loki Patera, a lava lake that appeared to be particularly active at the same time. An even brighter outburst is seen to the lower right in panel (d), labeled “201308C” and is one of the most powerful outbursts ever seen on Io.

Credit: Imke De Pater and Katherine De Kleer, UC Berkeley.

Volcanoes on Jupiter’s moon Io, from the Keck & Gemini Observatories, August 2013

Images of Io obtained at different infrared wavelengths (in microns, μm, or millionths of a meter) 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). The bar on the right of each image indicates the intensity of the infrared emission. Note that emissions from the large volcanic outbursts on Aug. 15 at Rarog and Heno Paterae have substantially faded by Aug. 29. A second bright spot is visible to the north of the Rarog and Heno eruptions in c and to the west of the outburst in d. This hot spot was identified as Loki Patera, a lava lake that appeared to be particularly active at the same time. An even brighter outburst is seen to the lower right in panel (d), labeled “201308C” and is one of the most powerful outbursts ever seen on Io.
Credit: Imke De Pater and Katherine De Kleer, UC Berkeley.
Galileo:  Zal Patera on Io.  via @EvansTraceyJ
Jupiter & Io (with erupting volcano) from New Horizons, 2007.
Galileo:  Volcanoes of Io at night, May 31st 1998.  Noisy image due to a long exposure and interference from Jupiter’s radiation belts.

Galileo: Volcanoes of Io at night, May 31st 1998. Noisy image due to a long exposure and interference from Jupiter’s radiation belts.

ultraviolent-ultraviolets:

eruption on jupiter’s moon io

ultraviolent-ultraviolets:

eruption on jupiter’s moon io

ultraviolent-ultraviolets:

jupiter’s moon io

New Horizons:  Jupiter’s moon Io, 27 February 2007
Galileo NIMS observation of Io, April 30, 1998.
Another Hubble image of Io, this time in ultraviolet light.

Credit: Francesco Paresce (ESA/ STScI) Paola Sartoretti, University of Padova

Another Hubble image of Io, this time in ultraviolet light.

Credit: Francesco Paresce (ESA/ STScI) Paola Sartoretti, University of Padova

Hubble Captures Volcanic Eruption Plume From Io, June 19, 1997.

The Hubble telescope has snapped a picture of a 400-kilometer-high (250-mile-high) plume of gas and dust from a volcanic eruption on Io, Jupiter’s large, innermost moon.

Io was passing in front of Jupiter when Hubble took this image. The plume appears as an orange patch just off the edge of Io [at eight o’clock], against the blue background of Jupiter’s clouds. Io’s volcanic eruptions blast material hundreds of kilometers into space in giant plumes of gas and dust. In this image, material must have been blown out of the volcano at more than 2,000 mph to form a plume of this size, which is the largest yet seen on Io.


Credit: John Spencer (Lowell Observatory) and NASA

Hubble Captures Volcanic Eruption Plume From Io, June 19, 1997.

The Hubble telescope has snapped a picture of a 400-kilometer-high (250-mile-high) plume of gas and dust from a volcanic eruption on Io, Jupiter’s large, innermost moon.

Io was passing in front of Jupiter when Hubble took this image. The plume appears as an orange patch just off the edge of Io [at eight o’clock], against the blue background of Jupiter’s clouds. Io’s volcanic eruptions blast material hundreds of kilometers into space in giant plumes of gas and dust. In this image, material must have been blown out of the volcano at more than 2,000 mph to form a plume of this size, which is the largest yet seen on Io.
Credit: John Spencer (Lowell Observatory) and NASA