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Diversity of impacts on Rhea CASSINI PHOTO RELEASE Posted: July 11, 2005
The northern basin, named Tirawa, was discovered in Voyager images. This ancient impact site is approximately 360 kilometers (220 miles) across. Another, perhaps larger basin sits to the south of Tirawa and is partly in shadow. This view shows principally the leading hemisphere on Rhea; north is up and rotated about 10 degrees to the left. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 2, 2005, at a distance of approximately 1.8 million kilometers (1.1 million miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 47 degrees. Resolution in the original image was 11 kilometers (7 miles) per pixel. The image has been contrast-enhanced and magnified by a factor of two to aid visibility. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. 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 and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo. |
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The 18th Progress resupply ship launched to the International Space Station is guided to docking with the Zvezda service module's aft port via manual control from commander Sergei Krikalev. A problem thwarted plans for an automated linkup.
As excitement builds for the first space shuttle launch in over two years, this comprehensive video selection captures the major pre-flight events for Discovery and her seven astronauts.
Dr. Bonnie Buratti, team member of the Cassini visual and infrared mapping spectrometer, discusses a possible volcano discovered on Saturn's moon Titan. (2min 12sec file)
NASA's space-based research into how hurricanes form and move is explained in this narrated movie from the agency. (8min 02sec file)
The co-chairs and other members of the Stafford-Covey Return to Flight Task Group, which is overseeing NASA's space shuttle program, hold a news conference in Houston on June 8.
This animation shows the Voyager spacecraft heading into the solar system's final frontier and the edge of interstellar space. (1min 24sec file)
