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哈勃<br /> 搜寻银河系的一小部分<br /> 我们的太阳系位于银河系的两个主要旋臂之间。开普勒望远镜的观测视野从我们围绕银河中心运行的轨道向前方延伸，覆盖一个狭窄的锥形空间。这样一来，开普勒望远镜所观测的恒星到银河系中心的距离大致与我们是一样的。<br /> （左侧图中白色文字）<br /> 太阳围绕银河系中心的运行轨道<br /> （最下面的大图）<br /> 黄色字：<br /> 开普勒望远镜的观测空间 3000光年 太阳<br /> 白色字：<br /> 开普勒望远镜在其观测空间内将对大约10万颗恒星进行连续监视。而据估计，整个银河系中大约有2000亿~4000亿颗恒星。<br /> 绿色小字：<br /> Egale：老鹰星云<br /> Omega: 奥米茄星云<br /> Trifid：三叶星云<br /> Lagoon：礁湖星云<br /> North：北美星云<br /> Cygnus: 天鹅座环<br /> Califonia：加州星云<br /> Gum：古姆星云<br /> Cone：锥状星云<br /> Crab：蟹状星云<br /> Orion：猎户座大星云<br /> Rosette：玫瑰星云<br /> <br /> <br /> </td></tr></table> <div class="ptg mbm mtn"> <a title="地球" href="misc.php?mod=tag&id=2584" target="_blank">地球</a>, <a title="技术" href="misc.php?mod=tag&id=1394" target="_blank">技术</a></div> </div> <div id="comment_1153244" class="cm"> </div> <div id="post_rate_div_1153244"></div> </div> </div> </td></tr> <tr><td class="plc plm"> <div id="p_btn" class="mtw mbm hm cl"> <a 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