PIA01088: Nergal Crater on Ganymede
Target Name: Ganymede
Is a satellite of: Jupiter
Mission: Galileo
Spacecraft: Galileo Orbiter
Instrument: Solid-State Imaging
Product Size: 648 x 460 pixels (width x height)
Produced By: Brown University
Producer ID: P49752
MRPS85709
Addition Date: 1997-11-24
Primary Data Set: Galileo EDRs
Full-Res TIFF: PIA01088.tif (324.1 kB)
Full-Res JPEG: PIA01088.jpg (62.03 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:

Two impact craters surrounded by an unusual ejecta blanket dominate this high resolution image of the surface of Jupiter's moon, Ganymede. NASA's Galileo spacecraft imaged this region as it passed Ganymede during its second orbit through the Jovian system. North is to the top of the picture and the sun illuminates the surface from the southeast. Nergal, the larger crater, is about eight kilometers (five miles) in diameter, while the smaller (unnamed) crater to its west is three kilometers (1.8 miles) across. The craters are situated in a region of bright grooved terrain named Byblus Sulcus, located in the northern part of Marius Regio at 39 degrees latitude and 201 degrees longitude. The distinctive ejecta blanket that surrounds them is darker nearer the craters and brighter further away. The inner region of the ejecta is characterized by a lobate appearance indicative of the flow of a liquid (or slushy) substance over the surface. The flow was probably icy surface material melted by the energy released during the impact that formed the crater.

The picture covers an area about 48 kilometers (30 miles) by 34 kilometers (21 miles) across at a resolution of 86 meters (287 feet) per picture element. The image was taken on September 6, 1996 by the solid state imaging (CCD) system on NASA's Galileo spacecraft.

The Jet Propulsion Laboratory, Pasadena, CA manages the Galileo mission for NASA's Office of Space Science, Washington, DC. JPL is an operating division of California Institute of Technology (Caltech).

This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov.

Image Credit:
NASA/JPL/Brown University

Image Addition Date:
1997-11-24