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Collection:
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NASA Astronomy Picture of the Day Collection
Collection
NASA Astronomy Picture of the Day Collection
Collection
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Title:
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Saturn's Moon Dione
Title
Saturn's Moon Dione
Title
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Explanation:
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Dione [ http://seds.lpl.ari…], one of Saturn [ http://antwrp.gsfc.…]'s larger moons, is remarkable for its bright surface streaks. These streaks run across some of Dione's many craters, which indicate that the process which created the streaks occurred later than the process which created the craters. Dione [ http://www.c3.lanl.…] is made of mostly water ice but its relatively high density indicates that it contains much rock inside. Dione was discovered by Giovanni Cassini in 1684. NASA's Cassini mission [ http://newproducts.…] to Saturn is currently scheduled for launch in October 1997. Dione's orbit is remarkable it that it also houses the much smaller moon Helene [ http://antwrp.gsfc.…]. This moon, once designated "Dione B", precedes Dione by about 1/6th of an orbit.
Explanation
Dione [ http://seds.lpl.ari…], one of Saturn [ http://antwrp.gsfc.…]'s larger moons, is remarkable for its bright surface streaks. These streaks run across some of Dione's many craters, which indicate that the process which created the streaks occurred later than the process which created the craters. Dione [ http://www.c3.lanl.…] is made of mostly water ice but its relatively high density indicates that it contains much rock inside. Dione was discovered by Giovanni Cassini in 1684. NASA's Cassini mission [ http://newproducts.…] to Saturn is currently scheduled for launch in October 1997. Dione's orbit is remarkable it that it also houses the much smaller moon Helene [ http://antwrp.gsfc.…]. This moon, once designated "Dione B", precedes Dione by about 1/6th of an orbit. Explanation
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Credit and Copyright:
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Credit_and_Copyright
Credit and Copyright
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facet_when:
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1684
facet_when
1684
facet_when
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facet_when:
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October 1997
facet_when
October 1997
facet_when
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facet_where:
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Arizona
facet_where
Arizona
facet_where
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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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Hamilton
facet_where
Hamilton
facet_where
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facet_where:
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Dione
facet_where
Dione
facet_where
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facet_where:
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Goddard Space Flight Center (GSFC)
facet_where
Goddard Space Flight Center (GSFC)
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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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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Moon
facet_what
Moon
facet_what
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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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Dione
facet_what
Dione
facet_what
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facet_what:
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moon
facet_what
moon
facet_what
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facet_when_year:
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1997
facet_when_year
1997
facet_when_year
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facet_when_year:
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1684
facet_when_year
1684
facet_when_year
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original url:
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original_url
original url
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UID:
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SPD-APOD-ap951009
UID
SPD-APOD-ap951009
UID
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