Media Information

 
 
 
Collection:
NASA Planetary Photo Journal Collection
Title:
Bent Spoke
Original Caption Released with Image:
A bright spoke extends across the unilluminated side of Saturn's B ring about the same distance as that from London to Cairo. The background ring material displays some azimuthal (i.e., left to right) asymmetry.

The radial (outward from Saturn) direction is up in this view. A noticeable kink in the spoke occurs very close to the radius where ring particles orbit the planet at the speed of Saturn's magnetic field. Such a connection is most intriguing to scientists studying these ghostly ring phenomena.

If gravity alone were affecting the spoke material, there would be no kink and the entire spoke would be angled toward right, like the bottom portion. That it bends to the left above the kink indicates that some other force, possibly related to the magnetic field, is acting on the spoke material. The shape might also indicate that the spoke did not form in a radial orientation, thus challenging scientists' assumptions about these features.

This view looks toward the unlit side of the rings from about 58 degrees above the ringplane.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Jan. 23, 2007 at a distance of approximately 1.6 million kilometers (1 million miles) from Saturn. Image scale is 10 kilometers (6 miles) per pixel.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov/home/index.cfm. The Cassini imaging team homepage is at http://ciclops.org.
Image Credit:
NASA/JPL/Space Science Institute
Produced By:
Cassini Imaging Team
Mission:
Cassini
Spacecraft:
Cassini Orbiter
Target Name:
S Rings
Is a satellite of:
Saturn
Instrument:
Imaging Science Subsystem - Narrow Angle
Product Size:
1008 samples x 1008 lines
Primary Data Set:
Cassini
facet_what:
Saturn
facet_what:
Cassini
facet_what:
Visible Light
facet_what:
Cassini Orbiter
facet_what:
Huygens Probe
facet_what:
Cassini-Huygens
facet_what:
Imaging Science Subsystem (ISS)
facet_where:
Saturn
facet_where:
London
facet_where:
Cairo
facet_where:
Jet Propulsion Laboratory (JPL)
Image #:
PIA08891
UID:
SPD-PHOTJ-PIA08891
orignial url:

Bent Spoke