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Collection:
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NASA Cassini-Huygens Collection
Collection
NASA Cassini-Huygens Collection
Collection
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Description:
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Ring Spokes
description
Ring Spokes
Description
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Full Description:
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Voyager 2 obtained this high-resolution picture of Saturn's rings on August 22, 1981 when the spacecraft was 4 million kilometers (2.5 million miles) away. Evident here are the numerous "spoke" features in the B ring; their sharp, narrow appearance suggests short formation times. Scientists think electromagnetic forces are responsible in some way for these features, but no detailed theory has been worked out.
Spokes of this nature were observed to persist at times for two or three rotations of the ring about the planet. Freshly-formed spokes seemed to revolve around the planet at the same rate as the rotation of the magnetic field and the interior of Saturn, independent of their distance from the center of Saturn. It is therefore suspected that the tiny dust grains which form the spokes are electrically charged. Older spokes, which presumably have lost their electrical charge, revolve with the underlying larger ring particles.
For a high resolution image, click here.
Full_Description
Voyager 2 obtained this high-resolution picture of Saturn's rings on August 22, 1981 when the spacecraft was 4 million kilometers (2.5 million miles) away. Evident here are the numerous "spoke" features in the B ring; their sharp, narrow appearance suggests short formation times. Scientists think electromagnetic forces are responsible in some way for these features, but no detailed theory has been worked out.
Spokes of this nature were observed to persist at times for two or three rotations of the ring about the planet. Freshly-formed spokes seemed to revolve around the planet at the same rate as the rotation of the magnetic field and the interior of Saturn, independent of their distance from the center of Saturn. It is therefore suspected that the tiny dust grains which form the spokes are electrically charged. Older spokes, which presumably have lost their electrical charge, revolve with the underlying larger ring particles.
For a high resolution image, click here.
Full Description
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Keywords:
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gallery
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gallery
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Keywords:
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images
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Cassini
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Cassini
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mission
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mission
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Huygens
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Huygens
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Keywords:
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probe
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Saturn
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explore
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explore
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videos
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movies
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Jupiter
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Jupiter
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flyby
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spacecraft
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spacecraft
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assembly
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assembly
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launch
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flight
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operations facilities
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operations facilities
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Keywords:
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mpeg
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Keywords:
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Quicktime
keywords
Quicktime
Keywords
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facet_what:
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Saturn
facet_what
Saturn
facet_what
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facet_what:
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Cassini
facet_what
Cassini
facet_what
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facet_what:
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Jupiter
facet_what
Jupiter
facet_what
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facet_what:
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Huygens Probe
facet_what
Huygens Probe
facet_what
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facet_what:
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Voyager
facet_what
Voyager
facet_what
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facet_what:
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Voyager 2
facet_what
Voyager 2
facet_what
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facet_where:
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Saturn
facet_where
Saturn
facet_where
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facet_where:
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Jupiter
facet_where
Jupiter
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
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facet_when:
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August 22, 1981
facet_when
August 22, 1981
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facet_when_year:
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1981
facet_when_year
1981
facet_when_year
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UID:
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SPD-SATRN-805
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original url:
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original_url
original url
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