File:Properties_of_regolith_on_Eros.jpg
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Properties_of_regolith_on_Eros.jpg (375 × 468 pixels, file size: 202 KB, MIME type: image/jpeg)
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Summary
DescriptionProperties 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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Date | |
Source | Planetary Photojournal - PIA02950 |
Author | NASA/JPL/JHUAPL |
Licensing
Public domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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Items portrayed in this file
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5 August 2000
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:16, 4 July 2019 | 375 × 468 (202 KB) | Kesäperuna | 100% JPG from TIFF source, converted to sRGB. | |
23:49, 28 October 2011 | 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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