Astronomy Picture of the Day

620 Kilometers Above Rhea

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#82743 by @ 14.12.2005 00:00 - nach oben -
620 Kilometers Above Rhea

What does the surface of Saturn's moon Rhea look like?

To help find out, the robot
Cassini spacecraft currently orbiting
was directed to fly right past the second largest moon of the
gas giant planet late last month.

Pictured above
is an image taken only 620 kilometers above
Rhea's icy surface,
spanning about 90 kilometers.

The rim of an old crater crosses the middle of the image, with many smaller and younger
craters scattered throughout.

A linear depression
-- possibly a tectonic fault -- is visible toward the right, crossing the likely loose
material that composes Rhea's surface

The origins of many features on
are currently unexplained and being

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