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class="ss"><div><span>导读： </span>据美国国家航空航天局（NASA）官网消息，NASA将于美国东部时间9月8日下午7:05从佛罗里达州卡纳维拉尔角空军基地发射“源光谱释义资源安全风化层辨认探测器（OSIRIS-REx）”。作为美国首个小行星采样返回任务，OSIRIS ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><span style="color: rgb(67, 67, 67); font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; line-height: 24px; background-color: rgb(251, 251, 251);">据美国国家航空航天局（NASA）官网消息，NASA将于美国东部时间9月8日下午7:05从佛罗里达州卡纳维拉尔角空军基地发射“源光谱释义资源安全风化层辨认探测器（OSIRIS-REx）”。作为美国首个小行星采样返回任务，OSIRIS-REx旨在探测一颗名为“贝努”（Bennu）的小行星，研究地球如何形成，生命如何开始，让人们更深入地认识那些可能撞击地球的小行星。</span><div><div style="text-align: center;"><p><a href="data/attachment/portal/201608/22/100741yycxd3gd1zvznj1r.jpg" target="_blank"><img src="data/attachment/portal/201608/22/100741yycxd3gd1zvznj1r.jpg"></a></p></div><div><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">OSIRIS-REx首席调查员、亚利桑那州立大学图森分校（UAT）的但丁·劳雷塔介绍，OSIRIS-Rex搭载了<b>5台设备来探测“贝努”。</b></p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">由UAT承制的3台<b><a href="http://display.oecr.com" target="_blank" class="relatedlink">照相</a>机</b>组成的相机组主要用于观测“贝努”，并拍摄相关图像，帮助探测器选择合适的采样地点并见证采样事件；</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><b><a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>测高计</b>用于<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a>航天器和“贝努”表面之间的距离并帮助绘制小行星的形状；</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><b>热辐射光谱仪</b>研究矿物质丰度并观测红外热光谱提供温度信息；</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><b>可见光和红外光谱仪</b>主要用于测量“贝努”发出的可见光和红外光，确定其矿物质和有机物组成；</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><b>风化层X射线成像光谱仪</b>将观测X射线光谱，以确定“贝努”表面化学成分及丰度。</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">除了这5台探测设备，还有洛克希德·马丁太空系统公司提供的触摸和采样获得机制（TAGSAM）及样品返回舱，前者用于收集“贝努”表面样本，后者拥有一台隔热设备和一个降落伞，以便将样品送回地球。</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 'Microsoft YaHei', STHeiti, 'WenQuanYi Micro Hei', Arial, SimSun, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">按计划，重约2110公斤、完全由燃料驱动的OSIRIS-REx将搭载“阿特拉斯5（Atlas V）”火箭升空，于2018年抵达“贝努”，随后进入距离小行星表面约4.8公里的轨道进行为期6个月的勘测，之后利用机器手臂采集2—70盎司（约60到2000克）的地表样本，并于2023年将样本送回地球。</p><p style="margin: 8px auto 0px; padding: 0px; vertical-align: baseline; word-wrap: break-word; word-break: break-all; line-height: 26px; text-indent: 2em; font-family: 'Classic Grotesque W01', 'Hiragino Sans GB', 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