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<p style="white-space: normal;"><img class="rich_pages js_insertlocalimg" data-ratio="0.2857142857142857" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_gif/BNdS23Z3kicfW39BDuBzWq1U0th2ZUE6Bx30MH66QlmndLUzYsQ24jkGTTPtw81gwQM5ZppF5vdfdRTDSJRhHPw/640?wx_fmt=gif" data-type="gif" data-w="700" style="text-align: center;"  /></p><section style="box-sizing: border-box;font-size: 16px;"><section style="box-sizing: border-box;" powered-by="gulangu"><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;"><span style="font-size: 16px;">大小和地球相似，</span><br style="box-sizing: border-box;"  /></p><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;"><span style="font-size: 16px;">或存在液态水，</span></p><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;"><span style="font-size: 16px;">可能适合人类居住的系外行星，</span></p><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;"><span style="font-size: 16px;">但别高兴得太早啦！</span></p><p style="white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;"><span style="font-size: 16px;">近日，美国国家航空航天局的TESS（下称“苔丝”）望远镜在一颗恒星周边的宜居带中发现了一颗大小与地球相仿的行星。</span><span style="font-size: 16px;">该行星被称作TOI 700d，距离地球101.5光年，也就是以光的速度要走101.5年。</span><br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;"><span style="font-size: 16px;">光速有多快？</span><span style="font-size: 16px;">1秒绕地球7.5圈，从地球表面到月球表面需1.255秒，101.5光年有多远？</span><span style="font-size: 16px;">emmmm，小编放弃了。</span></p><p style="white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;"><span style="font-size: 16px;">TOI 700d是一颗啥样儿的行星？</span></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="gulangu"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img data-ratio="0.563" src="http://mmbiz.qpic.cn/mmbiz_jpg/BNdS23Z3kice1CGe3KJGtRdicgELHDO0lo1PXlN0ZRe0K2nIMwibDiaUOjvk7Kib3h1Nice3BbSnpqHrMO9Gkf7CNxQQ/640?wx_fmt=jpeg" data-type="jpeg" data-w="1000" style="vertical-align: middle;box-sizing: border-box;"  /></section></section><section style="box-sizing: border-box;" powered-by="gulangu"><p style="white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">TOI 700d环绕着一颗被命名为TOI 700的红矮星公转，公转周期是37天。地球的公转周期是一年。<br style="box-sizing: border-box;"  /></p><p style="white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">TOI 700d比地球大20%，从恒星获得的能量约为地球所接收太阳能的86%，这意味着它位于恒星TOI 700的宜居带中。科学家们观测发现700d存在潮汐锁定现象，类似于月球，永远以同一面朝着恒星，不似地球一样还会自转，所以很可能不会存在昼夜交替，也不会有春夏秋冬。它的气候和地球完全不同，虽然存在诞生生命的条件，但只是出位于“宜居区域”，并不一定完全适宜生存。</p><p style="white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">科学家们做了不少模拟实验，有些显示出这颗行星表面被海洋覆盖，外围大气层则是“密集的、二氧化碳主导”，类似于火星早期的大气层。有些则显示出这颗行星干燥无云。具体它的气候如何，还需要很长时间的观测和计算。</p><p style="white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">据2016年统计显示，“苔丝”的前任开普勒望远镜已发现4000多颗候选行星，其中超200颗宜居行星可能存在生命。</p><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">听说，科学家们已经开始制作一个系统的</p><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">“宜居星球指南”了</p><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">把迄今为止发现的适合未来人类移居的星球</p><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">分门别类</p><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">星际移民这事虽然遥远</p><p style="text-align: center;white-space: normal;box-sizing: border-box;margin-top: 15px;margin-bottom: 15px;">但依然值得期待……<span style="text-align: justify;"></span></p></section></section><section style="white-space: normal;box-sizing: border-box;font-size: 16px;"><section powered-by="gulangu" style="transform: rotate(0deg);box-sizing: border-box;"><section style="box-sizing: border-box;"><p style="margin-top: 15px;margin-bottom: 15px;box-sizing: border-box;"><span style="font-size: 15px;"><strong style="font-size: 14px;text-align: left;box-sizing: border-box;">本文由中国自然资源报社微信公众号“”独家编辑。</strong><strong style="font-size: 14px;text-align: left;box-sizing: border-box;">未经授权，谢绝媒体（包括公众号）转载。转载请在醒目位置标注来源：。</strong></span></p></section></section></section><section style="white-space: normal;max-width: 100%;box-sizing: border-box;font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: rgb(255, 255, 255);font-size: 16px;overflow-wrap: break-word !important;"><section powered-by="gulangu" style="max-width: 100%;box-sizing: border-box;overflow-wrap: break-word !important;"><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;overflow-wrap: break-word !important;"><span style="max-width: 100%;letter-spacing: 0.544px;font-size: 15px;box-sizing: border-box !important;overflow-wrap: break-word !important;"></span></p></section></section><section powered-by="gulangu" style="white-space: normal;max-width: 100%;box-sizing: border-box;font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: rgb(255, 255, 255);font-size: 16px;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box;overflow-wrap: break-word;letter-spacing: 0.544px;line-height: 27.2px;"><section powered-by="gulangu" style="max-width: 100%;box-sizing: border-box;display: inline;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box;overflow-wrap: break-word;height: 1px;background-color: rgb(160, 160, 160);"><br  /></section></section></section></section><section powered-by="gulangu" style="white-space: normal;"><p><span style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;font-size: 14px;">来源：</span><span style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 14px;letter-spacing: 0.544px;text-align: left;">央视新闻客户端、新浪科技、环球网</span></p><p><span style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 14px;letter-spacing: 0.544px;text-align: left;">编辑：</span><span style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 14px;letter-spacing: 0.544px;text-align: left;">吴琼</span></p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;text-align: left;overflow-wrap: break-word !important;"><span style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;max-width: 100%;box-sizing: border-box;font-size: 14px;overflow-wrap: break-word !important;">审核：兰圣伟</span></p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;text-align: left;overflow-wrap: break-word !important;"><br  /></p></section><section style="white-space: normal;max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section powered-by="gulangu" style="margin-top: 20px;margin-bottom: 10px;max-width: 100%;box-sizing: border-box;overflow-wrap: break-word !important;"><section style="padding-top: 10px;padding-right: 10px;padding-left: 10px;max-width: 100%;box-sizing: border-box;display: inline-block;width: 677px;vertical-align: top;border-style: solid;border-width: 1px;border-radius: 0px;border-color: rgb(62, 62, 62);overflow-wrap: break-word !important;"><section powered-by="gulangu" style="margin-top: -26px;margin-bottom: 8px;max-width: 100%;box-sizing: border-box;text-align: center;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box;display: inline-block;vertical-align: top;overflow-wrap: break-word !important;"><section style="margin-right: 10px;max-width: 100%;box-sizing: border-box;height: 2em;border-right: 1em solid rgb(232, 56, 13);overflow-wrap: break-word !important;border-top: 1em solid transparent !important;border-bottom: 1em solid transparent !important;"><br  /></section><section style="margin-top: -2em;margin-right: 7px;max-width: 100%;box-sizing: border-box;height: 2em;border-right: 1em solid rgb(255, 255, 255);overflow-wrap: break-word !important;border-top: 1em solid transparent !important;border-bottom: 1em solid transparent !important;"><br  /></section><section style="margin-top: -2em;max-width: 100%;box-sizing: border-box;height: 2em;border-right: 1em solid rgb(232, 56, 13);overflow-wrap: break-word !important;border-top: 1em solid transparent !important;border-bottom: 1em solid transparent !important;"><br  /></section></section><section style="max-width: 100%;box-sizing: border-box;display: inline-block;vertical-align: top;height: 2em;line-height: 2em;background-color: rgb(232, 56, 13);color: rgb(255, 255, 255);letter-spacing: 1.5px;overflow-wrap: break-word !important;"><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;overflow-wrap: break-word !important;"><strong style="max-width: 100%;box-sizing: border-box;overflow-wrap: break-word !important;">自然资源报 自然都需要</strong></p></section><section style="max-width: 100%;box-sizing: border-box;display: inline-block;vertical-align: top;overflow-wrap: break-word !important;"><section style="margin-left: 10px;max-width: 100%;box-sizing: border-box;height: 2em;width: 1em;border-left: 1em solid rgb(232, 56, 13);overflow-wrap: break-word !important;border-top: 1em solid transparent !important;border-bottom: 1em solid transparent !important;"><br  /></section><section style="margin-top: -2em;margin-right: -8px;margin-left: 7px;max-width: 100%;box-sizing: border-box;height: 2em;width: 1em;border-left: 1em solid rgb(255, 255, 255);overflow-wrap: break-word !important;border-top: 1em solid transparent !important;border-bottom: 1em solid transparent !important;"><br  /></section><section style="margin-top: -2em;max-width: 100%;box-sizing: border-box;height: 2em;width: 1em;border-left: 1em solid rgb(232, 56, 13);overflow-wrap: break-word !important;border-top: 1em solid transparent !important;border-bottom: 1em solid transparent !important;"><br  /></section></section></section><section powered-by="gulangu" style="max-width: 100%;box-sizing: border-box;text-align: left;font-size: 15px;line-height: 1.8;overflow-wrap: break-word !important;"><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;overflow-wrap: break-word !important;"><br  />《中国自然资源报》 （含智能手机原版阅读）请直接在当地邮局订阅，邮发代号：1-22。</p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;overflow-wrap: break-word !important;">订阅《自然资源通讯》《中国土地》《中国不动产》杂志请直接汇款到报社，并将订阅回执连同汇款凭证复印件传真或发至邮箱 。 </p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;overflow-wrap: break-word !important;">传真：010-68047681</p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;overflow-wrap: break-word !important;">邮箱：bkfx68047628@163.com</p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;overflow-wrap: break-word !important;"><br style="max-width: 100%;box-sizing: border-box;overflow-wrap: break-word !important;"  /></p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;overflow-wrap: break-word !important;">不明事宜请与报刊经营部联系</p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;overflow-wrap: break-word !important;">联系电话：010-68047627 010-68047643 010-68019465</p></section><section powered-by="gulangu" style="padding-top: 10px;padding-bottom: 10px;max-width: 100%;box-sizing: border-box;width: 655px;height: 54px;text-align: center;overflow-wrap: break-word !important;"><section style="margin-right: 3px;max-width: 100%;box-sizing: border-box;display: inline-block;vertical-align: middle;height: 0.7em;width: 2px;background-color: rgb(105, 143, 187);overflow-wrap: break-word !important;"><br  /></section><section style="margin-right: 3px;max-width: 100%;box-sizing: border-box;display: inline-block;vertical-align: middle;height: 1.35em;width: 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