File:Properties_of_regolith_on_Eros.jpg
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Properties_of_regolith_on_Eros.jpg (375 × 468像素,文件大小:202 KB,MIME类型:image/jpeg)
摘要
描述Properties of regolith on Eros.jpg |
English: Original description: On June 14, 2000, NEAR Shoemaker trained its camera on Eros' large, 5.3-kilometer (3.3-mile) diameter crater for a series of color pictures intended to measure the properties of regolith inside the asteroid's craters. In this false color view -- taken from an altitude of 50 kilometers (31 miles) -- redder hues represent rock and regolith that have been altered chemically by exposure to the solar wind and small impacts. Bluer hues represent fresher, less-altered rock and regolith, such as the bright patches that have been less affected by "space weathering." In that process, during micrometeorite impacts, rock reacts with miniscule amounts of trapped solar wind and is chemically changed. Interestingly, most of the large boulders have been just as affected as the regolith. This suggests either that the rocks are relatively old, or that they are "dirty" from an adhering film of regolith particles.
Italiano: Immagine in falsi colori, composizione di una serie di immagini raccolte dalla sonda Near Earth Asteroid Rendezvous (NEAR) il 14 giugno 2000 e che riprendono una porzione del cratere maggiore - di 5,3 km di diametro - presente sull'asteroide (433) Eros. Obiettivo delle osservazioni era evidenziare le proprietà della regolite nel cratere.
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日期 | |
来源 | Planetary Photojournal - PIA02950 |
作者 | NASA/JPL/JHUAPL |
许可协议
Public domainPublic domainfalsefalse |
本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zh、NASA版权方针页面或JPL图片使用方针。) | ||
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2011年10月28日 (五) 23:49 | 375 × 468(26 KB) | Harlock81 | {{Information |Description ={{en|1=Original description: On June 14, 2000, NEAR Shoemaker trained its camera on Eros' large, 5.3-kilometer (3.3-mile) diameter crater for a series of color pictures intended to measure the properties of regolith inside t |
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