小行星撞击地球！中国已开始部署防御
<div class="wx_rich_media_content" id="jsWxContainer"><section style='line-height: 1.75em;margin-right: 8px;margin-left: 8px;text-indent: 2em;margin-bottom: 8px;'><span style='letter-spacing: 1px;font-size: 16px;text-decoration-style: solid;text-decoration-color: rgba(0, 0, 0, 0.9);'>最近，关于编号为“2024 YR4”的小行星“可能会在8年后撞击地球”，在网络上引起热议。</span></section><p style='text-align: center;'><span class="wxart_image" wx-style='display:inline-block;'></span></p><section style='line-height: 1.75em;margin-right: 8px;margin-left: 8px;text-indent: 2em;margin-bottom: 8px;'><span style='font-size: 16px;letter-spacing: 1px;text-indent: 2em;'>中国天文专家表示，目前的撞击概率只是一个估值，眼下更重要的是开展持续观测和轨道测算。</span><span style='font-size: 16px;letter-spacing: 1px;text-indent: 2em;'>即便未来对人类构成明确威胁，防御策略也有很多，</span><strong style='font-size: 16px;letter-spacing: 1px;text-indent: 2em;'>中国目前已开始部署“近地小行星防御系统”，全球科学家也正以“行星防御”为纽带展开协作。</strong></section><section style='line-height: 1.75em;margin-right: 8px;margin-left: 8px;margin-bottom: 8px;text-indent: 2em;'><span style='letter-spacing: 1px;font-size: 16px;text-decoration-style: solid;text-decoration-color: rgba(0, 0, 0, 0.9);'></span></section><section class="channels_iframe_wrp wxw_wechannel_card_not_horizontal"><mp-common-videosnap class="js_uneditable custom_select_card channels_iframe videosnap_video_iframe" data-pluginname="mpvideosnap" data-url="https://findermp.video.qq.com/251/20304/stodownload?encfilekey=rjD5jyTuFrIpZ2ibE8T7YmwgiahniaXswqzIUj00mAjIuhWUu45URQfwucB36oXKwlh3nMyGLfMWtrShWkzxFLeSWYE49uYm1icibF8LFKO36vKSS9LecZXSSDQ&token=2lt8WBSnjTnRiabLNqybS4DQBJPqzfd9hicn8NSyY5k4vlfFqOP1hlgp1EUojAgcM4Ac7uA9iaOkMvsD3fEb1tYu3h59QBmtQBEGAibxrJcw6PCvsiaiaeQuu8xkyFJmUJ030iaUVeHXXo1WcwKqmibUZTwCGhd3R9E8Er86qdfVzusdvkM&idx=1&hy=SH&m=&scene=2&uzid=2" data-headimgurl="http://wx.qlogo.cn/finderhead/uDMUSaibD1DVUpE5Bq23lcsicHiaroFowHqRIFjvX8dZX4/0" data-username="v2_060000231003b20faec8c7e78a1dc1d4cb03e83cb077e30406664c448fd046cf89a663a84160@finder" data-nickname="CCTV4" data-desc="小行星8年后撞击地球？天文专家：别慌！" data-nonceid="14122714838726063018" data-type="video" data-mediatype="undefined" data-authiconurl="https://dldir1v6.qq.com/weixin/checkresupdate/icons_filled_channels_authentication_enterprise_a2658032368245639e666fb11533a600.png" data-from="new" data-width="1080" data-height="1920" data-id="export/UzFfAgtgekIEAQAAAAAA3BwvS-Aw4QAAAAstQy6ubaLX4KHWvLEZgBPEz6F0JChMZ6GJzNPgMIuAVjjSfDI6vWQtxhvLtLmf" data-isdisabled="0" data-errortips=""></mp-common-videosnap></section><p style='-webkit-tap-highlight-color: transparent; margin-right: 8px; margin-left: 8px; outline: 0px; font-family: "PingFang SC", system-ui, -apple-system, "system-ui", "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.578px; visibility: visible; line-height: 1.75em; text-indent: 2em; margin-bottom: 8px;'><span style='font-size: 17px;'><span style='-webkit-tap-highlight-color: transparent;outline: 0px;letter-spacing: 1px;'>“2024 YR4”于2024年12月27日首次被发现。</span><span style='letter-spacing: 1px;'>据估计，这颗小行星直径为40至90米，与一栋大楼大小相当。</span></span></p><p style='-webkit-tap-highlight-color: transparent; margin-right: 8px; margin-left: 8px; outline: 0px; font-family: "PingFang SC", system-ui, -apple-system, "system-ui", "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.578px; visibility: visible; line-height: 1.75em; text-indent: 2em; margin-bottom: 8px;'><span style='font-size: 17px;-webkit-tap-highlight-color: transparent;outline: 0px;letter-spacing: 1px;'>自2025年1月初以来，NASA的天文学家一直使用望远镜来追踪这颗小行星。目前，这颗小行星距离地球超过4800万公里。虽然撞击的可能性很小，但天文学家正在密切跟踪，以发现更多细节。</span></p><p style='-webkit-tap-highlight-color: transparent; margin-right: 8px; margin-left: 8px; outline: 0px; font-family: "PingFang SC", system-ui, -apple-system, "system-ui", "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.578px; visibility: visible; line-height: 1.75em; text-indent: 2em; margin-bottom: 8px;'><span style='font-size: 17px;-webkit-tap-highlight-color: transparent;outline: 0px;letter-spacing: 1px;'>报道称，“2024 YR4”大小与行星“杀手级别”的小行星相差甚远。“行星杀手”小行星是指直径为1公里或更大的太空岩石，可能对生命造成毁灭性影响。据估计，造成恐龙灭绝的小行星的直径约为10公里。</span></p><section style='-webkit-tap-highlight-color: transparent; margin-right: 8px; margin-left: 8px; outline: 0px; font-family: "PingFang SC", system-ui, -apple-system, "system-ui", "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.578px; visibility: visible; line-height: 1.75em; text-indent: 2em;'><span style='-webkit-tap-highlight-color: transparent;outline: 0px;letter-spacing: 1px;font-size: 17px;'>2013年，一颗直径20米的小行星在俄罗斯车里雅宾斯克上空进入地球大气层，在空中爆炸，释放的能量是第一颗原子弹的20到30倍，亮度超过太阳，散发出热量，损坏了7000多座建筑物，造成1000多人受伤。</span></section><section><br></section><section powered-by="xiumi.us" style='outline: 0px; visibility: visible; cursor: text; outline-offset: 2px; vertical-align: inherit; line-height: normal; font-size: 16px; letter-spacing: 1px; color: rgb(0, 0, 0); caret-color: rgb(255, 0, 0); font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; max-inline-size: 100%;'><section powered-by="xiumi.us" style='outline: 0px;visibility: visible;cursor: text;outline-offset: 2px;vertical-align: inherit;line-height: normal;max-inline-size: 100%;'><section style='outline: 0px;visibility: visible;cursor: text;outline-offset: 2px;vertical-align: inherit;line-height: normal;max-inline-size: 100%;'><section powered-by="xiumi.us" style='outline: 0px;visibility: visible;cursor: text;outline-offset: 2px;vertical-align: inherit;line-height: normal;max-inline-size: 100%;'><section style='text-align: right; -webkit-tap-highlight-color: transparent; outline: 0px; font-family: "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.544px; clear: both; min-height: 1em; line-height: 1.5em;'><span style='-webkit-tap-highlight-color: transparent;outline: 0px;font-family: Helvetica, Arial, sans-serif;font-size: 12px;color: rgb(136, 136, 136);letter-spacing: 2px;'>来源：央视新闻 中新网</span></section><section style='text-align: center; -webkit-tap-highlight-color: transparent; outline: 0px; font-family: "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.544px; clear: both; min-height: 1em; line-height: 1.5em;'><span style='-webkit-tap-highlight-color: transparent;outline: 0px;font-family: Helvetica, Arial, sans-serif;font-size: 12px;color: rgb(136, 136, 136);letter-spacing: 2px;'><img src="https://www.yewn.cn/data/attachment/forum/202502/12/093703zz73fk1iojc6qry1.png"></span></section><section style='-webkit-tap-highlight-color: transparent;outline: 0px;font-family: "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;clear: both;min-height: 1em;line-height: 1.5em;visibility: visible;cursor: text;outline-offset: 2px;vertical-align: inherit;max-inline-size: 100%;'><br></section><p><span style='-webkit-tap-highlight-color: transparent;outline: 0px;font-family: Helvetica, Arial, sans-serif;font-size: 12px;color: rgb(136, 136, 136);letter-spacing: 2px;'><br></span></p><section style='-webkit-tap-highlight-color: transparent;outline: 0px;font-family: "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;clear: both;min-height: 1em;line-height: 1.5em;'><br></section></section></section><br></section></section><p style='display: none;'><mp-style-type data-value="3"></mp-style-type></p></div> 谢谢分享一下 这还挺危险的 小行星撞地球…… 这可不得了。 这事儿可咋整 不会有危险的， 提前做好防护措施 真的还是假的 真的还是假的
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