Measuring the orbital shift of a 780-meter-wide primary asteroid and its moonlet from millions of miles away isn’t trivial. When DART slammed into Dimorphos, it didn't knock the binary system wildly off its trajectory around the Sun. The change in the system's heliocentric trajectory was expected to be small, a minuscule nudge that would become apparent only after months or years of continuous observation. By analyzing enough painstakingly gathered data, a global team of researchers led by Rahil Makadia at the University of Illinois Urbana-Champaign has now determined the consequences of the DART impact.
灯彩艺术秉承“图必有意，意必吉祥”的传统，形成了一套深厚而独特的文化符号体系。以蝙蝠、宝瓶、白象三种经典形象为例：作为独立的灯彩，它们分别象征福祉、平安与祥瑞。而清代《升平乐事图》中，宝瓶内插有戟，戟上悬挂万字符，白象驮载宝瓶，并配以如意、双钱等纹样，从而凝练成“平安纳吉”“太平有象”等层次更丰富的寓意。
，更多细节参见PDF资料
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And this was George Washington University, right?，这一点在PDF资料中也有详细论述
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