File:PIA19673-Mars-AlgaCrater-ImpactGlassDetected-MRO-20150608.jpg
![File:PIA19673-Mars-AlgaCrater-ImpactGlassDetected-MRO-20150608.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/1/17/PIA19673-Mars-AlgaCrater-ImpactGlassDetected-MRO-20150608.jpg/800px-PIA19673-Mars-AlgaCrater-ImpactGlassDetected-MRO-20150608.jpg?20150608215213)
原始檔案 (1,551 × 938 像素,檔案大小:197 KB,MIME 類型:image/jpeg)
說明
說明
摘要
[編輯]描述PIA19673-Mars-AlgaCrater-ImpactGlassDetected-MRO-20150608.jpg |
English: PIA19673: Spectral Signals Indicating Impact Glass on Mars
http://photojournal.jpl.nasa.gov/catalog/PIA19673 Researchers have found deposits of impact glass preserved in Martian craters, including Alga Crater, shown here. The detection is based on data from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on NASA's Mars Reconnaissance Orbiter. Deposits of impact glass have been preserved in Martian craters, including Alga Crater, shown here. Detection of the impact glass by researchers at Brown University, Providence, Rhode Island, is based on data from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on NASA's Mars Reconnaissance Orbiter. In color coding based on analysis of CRISM spectra, green indicates the presence of glass. (Blues are pyroxene; reds are olivine.) Impact glass forms in the heat of a violent impact that excavates a crater. Impact glass found on Earth can preserve evidence about ancient life. A deposit of impact glass on Mars could be a good place to look for signs of past life on that planet. This view shows Alga Crater's central peak, which is about 3 miles (5 kilometers) wide within the 12-mile (19-kilometer) diameter of this southern-hemisphere crater. The information from CRISM is shown over a terrain model and image, based on observations by the High Resolution Imaging Science Experiment (HiRISE) camera. The vertical dimension is exaggerated by a factor of two. The Mars Reconnaissance Orbiter has been using CRISM, HiRISE and four other instruments to investigate Mars since 2006. The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, led the work to build the CRISM instrument and operates CRISM in coordination with an international team of researchers from universities, government and the private sector. HiRISE is operated by the University of Arizona, Tucson, and was built by Ball Aerospace & Technologies Corp., Boulder, Colorado. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, built the orbiter and collaborates with JPL to operate it. |
日期 | |
來源 | http://photojournal.jpl.nasa.gov/jpeg/PIA19673.jpg |
作者 | NASA/JPL-Caltech/JHUAPL/Univ. of Arizona |
授權條款
[編輯]Public domainPublic domainfalsefalse |
![]() |
本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zh,NASA版權政策或JPL圖像使用政策) | ![]() |
![]() |
警告:
|
檔案歷史
點選日期/時間以檢視該時間的檔案版本。
日期/時間 | 縮圖 | 尺寸 | 使用者 | 備註 | |
---|---|---|---|---|---|
目前 | 2015年6月8日 (一) 21:52 | ![]() | 1,551 × 938(197 KB) | Drbogdan(留言 | 貢獻) | User created page with UploadWizard |
無法覆蓋此檔案。
檔案用途
全域檔案使用狀況
以下其他 wiki 使用了這個檔案:
- ar.wikipedia.org 的使用狀況
- el.wikipedia.org 的使用狀況
- en.wikipedia.org 的使用狀況
- es.wikipedia.org 的使用狀況
- et.wikipedia.org 的使用狀況
- eu.wikipedia.org 的使用狀況
- ja.wikipedia.org 的使用狀況
- mk.wikipedia.org 的使用狀況
- mnw.wikipedia.org 的使用狀況
- sr.wikipedia.org 的使用狀況
- th.wikipedia.org 的使用狀況
- tt.wikipedia.org 的使用狀況
- zh.wikipedia.org 的使用狀況