{"id":3358,"date":"2026-02-19T11:06:04","date_gmt":"2026-02-19T10:06:04","guid":{"rendered":"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/?post_type=glossary&#038;p=3358"},"modified":"2026-02-19T11:06:04","modified_gmt":"2026-02-19T10:06:04","slug":"aster","status":"publish","type":"glossary","link":"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/glossary\/aster\/","title":{"rendered":"ASTER"},"content":{"rendered":"<p>Advanced Spaceborne Thermal Emission and <a class=\"glossaryLink\" title=\"Glossary: reflection\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;reflection&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The return of light or sound waves from a surface. If a reflecting surface is plane, the angle of reflection of a light ray is the same as the angle of incidence.&lt;\/div&gt;\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/glossary\/reflection\/\" target=\"_blank\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Reflection<\/a> Radiometer &ndash; An imaging instrument on <a class=\"glossaryLink\"  title=\"Glossary: NASA\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;NASA&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;National Aeronautics and Space Administration - NASA, established in 1958 with Headquarters in Washington D.C., is the agency responsible for the public space program of the USA. Its mission is to plan, direct, and conduct aeronautical and space activities.&lt;\/div&gt;\"  href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/glossary\/nasa\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>NASA<\/a>&rsquo;s Terra. <a class=\"glossaryLink\"  title=\"Glossary: ASTER\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;ASTER&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Advanced Spaceborne Thermal Emission and Reflection Radiometer - An imaging instrument on NASA&rsquo;s Terra. ASTER is used to obtain detailed maps of land surface temperature, emissivity, reflectance, and elevation.&lt;\/div&gt;\"  href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/glossary\/aster\/\"  target=\"_blank\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>ASTER<\/a> is used to obtain detailed maps of land surface temperature, <a class=\"glossaryLink\" title=\"Glossary: emissivity\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;emissivity&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The ratio of the radiation emitted by a surface to that emitted by a black body at the same temperature.&lt;\/div&gt;\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/glossary\/emissivity\/\" target=\"_blank\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">emissivity<\/a>, <a class=\"glossaryLink\" title=\"Glossary: reflectance\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;reflectance&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The proportion of irradiated electromagnetic radiation reflected by a surface.&lt;\/div&gt;\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/glossary\/reflectance\/\" target=\"_blank\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">reflectance<\/a>, and elevation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Advanced Spaceborne Thermal Emission and Reflection Radiometer &#x2013; An imaging instrument on NASA&#x2019;s Terra. ASTER is used to obtain detailed maps of land surface temperature, emissivity, reflectance, and elevation.<\/p>\n","protected":false},"author":2,"featured_media":0,"menu_order":0,"template":"","meta":{"footnotes":""},"class_list":["post-3358","glossary","type-glossary","status-publish","hentry"],"translation":{"provider":"WPGlobus","version":"3.0.0","language":"en","enabled_languages":["en","es","de","fr","it"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"es":{"title":false,"content":false,"excerpt":false},"de":{"title":false,"content":false,"excerpt":false},"fr":{"title":false,"content":false,"excerpt":false},"it":{"title":false,"content":false,"excerpt":false}}},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ASTER - ESA Schoolatlas<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/esa-schoolatlas.eu\/esa-schoolatlas\/glossary\/aster\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ASTER - 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