当地时间19日晚间，日本多地都观测到神秘"光球"。包括日本关西机场的安保摄像头及多地都记录到 了"光球"划过夜空的一刻。 视频显示，原本昏暗的夜空中突然划过一个高亮的蓝白色"光球"，整片夜空被其照亮，随后"光球"在接 近地面时颜色转为白黄色，映照出的部分天空的颜色也随之改变，"光球"消失后，夜空又恢复正常。 鹿儿岛地区的气象台表示，鹿儿岛县的多个观测站同时记录到光亮，樱岛地区的观测仪器检测到空气振 动。截至目前，鹿儿岛地区气象部门仅能推测该现象可能是陨石或火流星，但具体成因仍有待核查。 ...

Core Points - A series of bright fireballs, or "fire meteors," have been observed across various regions in China, including Beijing, Guangdong, and Hainan, causing significant public interest and concern due to their brightness and accompanying loud explosions [7][9][11] - These fireballs are identified as typical fire meteors, which are significantly brighter than regular meteors, often exceeding a brightness of -3 magnitude, and can illuminate the night sky [9][11] - The recent fireball events are linked to the active Tau Aquariids meteor shower, which occurs when Earth passes through debris left by the 73P/Schwassmann-Wachmann 3 comet [18][20] Summary by Sections Fireball Observations - Residents in multiple cities reported witnessing bright fireballs in the night sky, with some initially mistaking them for lightning or explosions [7] - The fireball observed in Guangdong was noted to be 10 to 20 times larger than typical meteors, entering the atmosphere at a speed of 15 kilometers per second and generating temperatures exceeding 2000°C [11][12] Characteristics of Fire Meteors - Fire meteors are classified as "occasional meteors" with no predictable patterns, often resulting from irregularities in the meteor's density and structure, leading to explosive sounds upon atmospheric entry [12][13] - The energy released during these events can be substantial, with estimates ranging from 500 to 2000 tons of TNT equivalent, and specific events recorded energy releases of approximately 1500 tons of TNT [15] Composition and Coloration - The fireball's vibrant colors are attributed to the combustion of various elements such as calcium, magnesium, sodium, and iron, each emitting different wavelengths of light [17] - The fireball's diameter is estimated to exceed 2 meters, and its high-speed entry into the atmosphere results in a "daylight effect" due to the immense energy released [15][17] Historical Context and Meteor Showers - Historical records indicate that fire meteor events are not uncommon, with notable past occurrences leading to significant meteorite falls [26][38] - The Tau Aquariids meteor shower is a result of Earth passing through debris from a comet that has fragmented over time, contributing to the frequency of fireball sightings during this period [20][24]

"刚刚天亮了？"5月28日晚，广东茂名疑似有火流星划过天空，黑夜瞬间变白天，不少市民纷 纷用视频记录下这一刻。29日，茂名市应急管理局工作人员告诉南都记者，"我们咨询气象 局，说不是雷电现象。根据视频素材，我们推测大概率是火流星。没有造成事故，也没有人员 伤亡。" 5月2 8日晚，广东茂名疑似出现火流星。 根据许多茂名市民发布的视频，在28日晚9时许，一颗疑似流星的物体划过夜空，天空瞬间亮 如白昼。 对此，29日，茂名市应急管理局工作人员告诉南都记者，"我们咨询气象局，说不是雷电现 象。根据视频素材，我们推测大概率是火流星。没有造成事故，也没有人员伤亡。" SFC 天文馆表示，在太空当中，我们把一些没有特别固定的轨道，随便流浪的物质统 称 为 流 星 体 。 " 它 可 能 是 一 个 小 的 碎 片 ， 或 者 小 的 石 头 。 这 些 流 星 体 闯 入 大 气 之 后，通过摩擦和压缩空气，然后产生燃烧发光的现象，就形成流星。如果说是小 行星这样尺寸较大的天体进入大气，那产生的亮度还要更亮，如果直径达到一两 米，就会亮如白昼。" 天文馆解释称，"颜色可能和流星体当中的化学的成分相关，也跟空气相关。流星划 ...