Credit: Alan Friedman
Explanation:
Saturn and its magnificent
ring system
can offer even casual astronomers the most memorable of telescopic sights.
Wandering between Leo and Cancer
this
month, a bright
Saturn is
well placed for
viewing in
evening skies.
But from our earthbound perspective,
the tilt of Saturn's rings does
change with time.
In 1995 and 1996
the broad rings were edge-on and nearly invisible, gradually opening
to a spectacular
maximum tilt of about 27 degrees by 2003.
This frame from a
series of Saturn images beginning a year later,
in 2004, and ending just last month shows the steady decrease
in apparent tilt as the rings head toward another
edge-on presentation in 2009.
Saturn's south pole is toward the bottom.
Click on the picture to view the sharp, color gif movie.
1999 2000 2001 2002 2003 2004 2005 2006 2007 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
Saturn - saturn rings - Сатурн - кольца Сатурна
Публикации со словами: Saturn - saturn rings - Сатурн - кольца Сатурна | |
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