Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astronet.ru/db/xware/msg/1202666
Дата изменения: Tue Feb 1 11:41:14 2005
Дата индексирования: Fri Feb 28 08:45:01 2014
Кодировка:
Saturns Iapetus: Moon with a Strange Surface
Astronomy Picture of the Day
    


Saturns Iapetus: Moon with a Strange Surface
<< Yesterday 1.02.2005 Tomorrow >>
Saturns Iapetus: Moon with a Strange Surface
Credit & Copyright: Cassini Imaging Team, SSI, JPL, ESA, NASA
Explanation: What has happened to Saturn's moon Iapetus? A strange ridge crosses the moon near the equator, visible near the bottom of the above image, making Iapetus appear similar to the pit of a peach. Half of Iapetus is so dark that it can nearly disappear when viewed from Earth. Recent observations show that the degree of darkness of the terrain is strangely uniform, like a dark coating was somehow recently applied to an ancient and highly cratered surface. The other half of Iapetus is relatively bright but oddly covered with long and thin streaks of dark. A 400-kilometer wide impact basin is visible near the image center, delineated by deep scarps that drop sharply to the crater floor. The above image was taken by the Saturn-orbiting Cassini spacecraft during a flyby of Iapetus at the end of last year.

January
February
March
April
May
June
July
August
September
October
November
December
 < February 2005  >
Mo Tu We Th Fr Sa Su

123456
78910111213
14151617181920
21222324252627
28





Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
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 - Iapetus
Publications with words: Saturn - Iapetus
See also:
All publications on this topic >>