CICLOPS: Cassini Imaging Central Laboratory for OPerationS

Spectacular Spokes
[For trouble viewing the images/movies on this page, go here]
Signaling a return to the bright spokes first encountered by Cassini in 2005, three large white spokes stretch out across the B ring.

Throughout most of the last year, Cassini captured views of dark spokes. This image of bright spokes was taken Jan. 14, 2009 in visible light with the spacecraft's wide-angle camera.

The small moon Atlas (30 kilometers, 19 miles across) has been brightened by 30 percent but still appears as a faint dot between the A and F rings in the top right quadrant of the image.

This view looks toward the sunlit side of the rings from about 6 degrees below the ringplane. The view was acquired at a distance of approximately 551,000 kilometers (342,000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 155 degrees. Image scale is 29 kilometers (18 miles) per pixel.

The Cassini Equinox Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini Equinox Mission visit, and

Credit: NASA/JPL/Space Science Institute
Released: February 18, 2009 (PIA 10581)
Image/Caption Information
  Spectacular Spokes
PIA 10581

Avg Rating: 9.20/10

Full Size 1018x974:
PNG 249 KB

Want to add a comment?   Login (for Alliance Members) ... or ... Join the CICLOPS Alliance!