Astronomy Picture of the Day

Thin Rings Around Polarized Saturn

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Thin Rings Around Polarized Saturn

How thin are the rings of Saturn?

Brightness measurements from different angles have shown
Saturn's rings
to be about one kilometer thick, making them many times thinner,
in relative proportion, than a razor blade.

This thinness sometimes appears in
dramatic fashion
during an image taken nearly along the ring plane.

The robot Cassini spacecraft now orbiting
has now captured another shot that dramatically highlights the ring's thinness.

The above artistic looking image was taken early last month in
polarized light.

If alone in space, the unlit part of Saturn would be much darker.

Reflection of light off of moons like
Enceladus (pictured) and the billions of small
particles in Saturn's rings, however, gives the
giant space orb an unusual glow, an effect highlighted in polarized light.

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