PIA02547: The Role of Sulfur in Io's Volcanoes
Target Name: Io
Is a satellite of: Jupiter
Mission: Galileo
Spacecraft: Galileo Orbiter
Instrument: Photopolarimeter-Radiometer
Product Size: 1225 x 827 pixels (width x height)
Produced By: Lowell Observatory
Producer ID: MRPS96241
Addition Date: 2000-05-18
Primary Data Set: Galileo EDRs
Full-Res TIFF: PIA02547.tif (1.611 MB)
Full-Res JPEG: PIA02547.jpg (75.39 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

Current scientific 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 in October 1999, is ejected from the hot vents of Io's volcanoes (green arrow). The sulfur gas lands on the cold surface, where the sulfur atoms rearrange into molecules of three or four atoms (S3, S4), which give the surface a red color. Eventually the atoms rearrange into their most stable configuration, rings of eight atoms (S8), which form ordinary pale yellow sulfur.

Additional information about the Hubble Space Telescope is available at http://www.stsci.edu/hst/. Additional information about the Galileo mission is available at http://galileo.jpl.nasa.gov.

Image Credit:
NASA/JPL/Lowell Observatory

Image Addition Date:
2000-05-18