Misleading Perspective

SATURN DAILY

Credit: NASA/JPL/Space Science Institute

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Pasadena CA (JPL) Oct 25, 2005
The Saturn moon Mimas is much smaller than Rhea, but the geometry of this scene exaggerates the actual differences in size. Here, Mimas is on the opposite side of the rings from Rhea and Cassini. Mimas' diameter is 397 kilometers (247 miles), while Rhea's diameter is 1,528 kilometers (949 miles).

Saturn's shadow slices across the ringplane here. The view looks toward the Saturn-facing hemisphere on Mimas, and the anti-Saturn hemisphere on Rhea.

The image was taken in visible light with the narrow-angle camera on Sept. 9, 2005, from a distance of approximately 1.5 million kilometers (900,000 miles) from Rhea. Mimas was located on the far side of the rings, about 670,000 kilometers (420,000 miles) farther from Cassini. The image scale is 9 kilometers (6 miles) per pixel on Rhea and 13 kilometers (8 miles) per pixel on Mimas.

SATURN DAILY

Cassini-Huygens Mission Celebrates Anniversary

Pasadena CA (JPL) Oct 19, 2005
On the eighth anniversary of the launch of the NASA/ESA/ASI Cassini-Huygens spacecraft, the teams involved can look back at a string of remarkable discoveries.

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