从帕克太阳探测器的侧面看
(原标题: Looking Sideways from the Parker Solar Probe)
2024-02-19
浏览次数: 16
太阳附近发生了什么？为了找到答案，美国宇航局发射了机器人帕克太阳探测器（PSP）来调查比以往更接近太阳的区域。PSP的循环轨道使它每隔几个月就离太阳更近。这段特色的延时视频显示了去年PSP第16次接近太阳时从太阳屏蔽后侧身观察的景象——距离水星轨道很远。PSP的太阳探测器宽视场成像仪（WISPR）相机用了11天的时间拍摄了这些图像，但它们被数字压缩成大约一分钟的视频。太阳日冕的波动是可见的，日冕物质抛射是可见的，恒星、行星，甚至是我们银河系的中心带在PSP绕太阳运行时在背景中流过。PSP发现，太阳的邻域异常复杂，包括太阳磁场短暂逆转的情况。
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What's happening near the Sun? To help find out, NASA launched the robotic Parker Solar Probe (PSP) to investigate regions closer to the Sun than ever before. The PSP's looping orbit brings it nearer to the Sun each time around -- every few months. The featured time-lapse video shows the view looking sideways from behind PSP's Sun shield during its 16th approach to the Sun last year -- from well within the orbit of Mercury. The PSP's Wide Field Imager for Solar Probe (WISPR) cameras took the images over eleven days, but they are digitally compressed here into about one minute video. The waving of the solar corona is visible, as is a coronal mass ejection, with stars, planets, and even the central band of our Milky Way Galaxy streaming by in the background as the PSP orbits the Sun. PSP has found the solar neighborhood to be surprisingly complex and to include switchbacks -- times when the Sun's magnetic field briefly reverses itself.