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Credit & Copyright: (digital w/colortable):
Calvin J. Hamilton
Explanation:
Tethys is one of the larger and closer moons of Saturn.
It was visited by both
Voyager spacecraft -
Voyager 1 in November 1980 and by
Voyager 2 in August 1981.
Tethys
is now known to be composed almost completely of water ice.
Tethys shows a large
impact crater
that nearly circles the planet.
That the impact that caused this crater did not
disrupt the moon is taken as evidence that
Tethys was not completely frozen in its past.
Two smaller moons,
Telesto and
Calypso, orbit
Saturn just ahead of and behind Tethys.
Giovanni Cassini discovered Tethys in 1684.
In 1997, NASA
launched a
spacecraft named Cassini to Saturn that will arrive in 2004.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: Saturn - Tethys - Saturn's Moon
Publications with words: Saturn - Tethys - Saturn's Moon
See also:
- APOD: 2025 April 30 B A Happy Sky over Bufa Hill in Mexico
- Stereo Helene
- APOD: 2025 February 23 B Saturn in Infrared from Cassini
- APOD: 2024 December 8 B Aurora around Saturns North Pole
- Saturn at Night
- APOD: 2024 August 27 B Moon Eclipses Saturn
- APOD: 2024 June 23 B The Colors of Saturn from Cassini