Media Information
 
 
 
Collection:
NASA Astronomy Picture of the Day Collection
Title:
Saturn's Moon Tethys
Explanation:
Tethys is one of the larger and closer moons of Saturn. It was visited by both Voyager spacecraft [ http://voyager.jpl.…] - Voyager 1 in November 1980 and by Voyager [ http://antwrp.gsfc.…] 2 in August 1981. Tethys [ http://www.nineplan…] is now known to be composed almost completely of water ice. Tethys [ http://www.solarvie…] shows a large impact crater [ http://antwrp.gsfc.…] that nearly circles the planet. That the impact that caused this crater did not disrupt the moon is taken as evidence that Tethys [ http://sse.jpl.nasa…] was not completely frozen in its past. Two smaller moons, Telesto [ http://www.nineplan…] and Calypso [ http://www.nineplan…], orbit Saturn [ http://antwrp.gsfc.…] just ahead of and behind Tethys. Giovanni Cassini [ http://www-groups.d…] discovered Tethys in 1684. In 1997, NASA [ http://www.nasa.gov/] launched [ http://antwrp.gsfc.…] a spacecraft named Cassini [ http://saturn.jpl.n…] to Saturn that will arrive in 2004.
Credit and Copyright:
Voyager Project [ http://voyager.jpl.…], NASA [ http://www.nasa.gov/];
Credit and Copyright:
(digital w/colortable): Calvin J. Hamilton [ http://www.solarvie…]
keyword:
moon
keyword:
Saturn
keyword:
Tethys
facet_when:
1997
facet_when:
2004
facet_when:
1684
facet_when:
November 1980
facet_when:
August 1981
facet_where:
Saturn
facet_where:
Hamilton
facet_where:
Tethys
facet_where:
Goddard Space Flight Center (GSFC)
facet_where:
Jet Propulsion Laboratory (JPL)
facet_what:
Voyager
facet_what:
Moon
facet_what:
Saturn
facet_what:
Cassini
facet_what:
Crater
facet_what:
Voyager 1
facet_what:
Tethys
facet_what:
moon
facet_when_year:
1997
facet_when_year:
2004
facet_when_year:
1980
facet_when_year:
1981
facet_when_year:
1684
original url:
http://antwrp.gsfc.…
UID:
SPD-APOD-ap020519

Saturn's Moon Tethys
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