2026年1月13日
A Solar Eruption from SDO
Video Credit: NASA, SDO, AIA, Helioviewer; Processing & Text: Ogetay Kayali (MTU)
Explanation: What just leapt from the Sun? A towering structure of solar plasma suddenly rose from the Sun’s surface and unfurled into space — a structure so large that many Earths would easily fit within it– marking the onset of a dramatic Coronal Mass Ejection (CME). The event was captured in striking detail in late 2024 by NASA’s Solar Dynamics Observatory (SDO), whose continuous monitoring improves space weather forecasts and helps humanity better understand how solar activity affects satellites, GPS, radio communications, and power grids on Earth. The featured video blends three extreme-ultraviolet views from SDO’s Atmospheric Imaging Assembly (AIA), revealing how plasma at different temperatures surged upward as the eruption unfolded. Here, red highlights cooler, denser material lifted from the Sun’s lower atmosphere, while yellow traces hotter, million-degree coronal loops stretching outward as magnetic fields open. After the main outburst, the Sun’s magnetic fields quickly reorganize.
Tomorrow’s picture: pool of whirl
来自太阳动力学天文台的太阳爆发
视频来源: NASA, SDO, AIA, Helioviewer; 视频处理与文稿: Ogetay Kayali (MTU)
说明: 太阳究竟喷出了什么？一团高耸的太阳电浆结构突然从太阳表面升起，向太空展开——其规模之大，足以容纳多个地球——这标志着一次剧烈日冕物质抛射（CME）的开始。这一事件于2024年末被NASA的太阳动力学天文台（SDO）以惊人的细节捕捉到，SDO的持续监测有助于改善太空天气预报，并帮助人类更了解太阳活动如何影响地球上的卫星、GPS、无线电通信和电力网络。这段特色影片融合了三张来自SDO大气成像组件（AIA）拍摄的极紫外线观测，揭示了不同温度的电浆在喷发过程中如何向上涌动。图中，红色部分突显了从太阳低层大气抬升的较冷、较密之物质，而黄色则描绘了温度高达百万度的日冕环，这些日冕环随着磁场的打开而向外延伸。在主要爆发之后，太阳的磁场迅速重组。
strong>明日的图片: pool of whirl
