Rambler's Top100Astronet    
  по текстам   по ключевым словам   в глоссарии   по сайтам   перевод   по каталогу
 

Rembrandt Impact Basin on Mercury
<< Yesterday 4.05.2009 Tomorrow >>
Rembrandt Impact Basin on Mercury
Credit & Copyright: NASA/JHU APS/ASU/CIW; Courtesy Science/AAAS
Explanation: Why do portions of this huge crater on Mercury have so much iron? The unusual Rembrandt impact basin was discovered recently in images taken during the robotic MESSENGER spacecraft's 2008 October flyby of the Solar System's innermost planet. The unusual Rembrandt spans over 700 kilometers and at 4 billion years old is possibly the youngest large impact basin on the planet. Multicolored images of the crater floor, however, indicate reflections from areas containing unusually high amounts of iron and titanium. These elements indicate that some exposed materials have not been covered by more recent lava floes, and so might originate from an epoch of Mercury's formation. Data from Rembrandt and across Mercury are now being interpreted as indicating a relatively active and volcanic past for Mercury that includes surface tectonics. Close inspection of the above image will reveal rings of Mercury's Rembrandt impact basin circling around the image center. Mercury's limb is visible on the upper left, high cliffs and small craters are visible inside Rembrandt, and the terminator between night and day runs diagonally through the image. MESSENGER is on track to fly past Mercury again this September and enter orbit around Mercury in 2011.


<<  Май  >>
Пн Вт Ср Чт Пт Сб Вс
        1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
1995   1996   1997
1998   1999   2000
2001   2002   2003
2004   2005   2006
2007   2008   2009
2010   2011   2012
2013   2014   2015
2016   2017   2018
2019   2020   2021
2022   2023   2024
Январь
Февраль
Март
Апрель
Май
Июнь
Июль
Август
Сентябрь
Октябрь
Ноябрь
Декабрь
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.

Русский текст
Based on Astronomy Picture Of the Day
Публикации с ключевыми словами: Mercury - Меркурий
Публикации со словами: Mercury - Меркурий
См. также:
Все публикации на ту же тему >>

Оценка: 3.3 [голосов: 52]
 
О рейтинге
Версия для печати Распечатать

Астронет | Научная сеть | ГАИШ МГУ | Поиск по МГУ | О проекте | Авторам

Комментарии, вопросы? Пишите: info@astronet.ru или сюда

Rambler's Top100 Яндекс цитирования