Red aurora are generated by light emitted at a longer wavelength (0.630 micrometers), and other colors such as blue and purple are also sometimes observed.
红色的极光是由较长波长(0.630微米)的发出光引起的，有时也会观察到其他诸如蓝色和紫色的极光。
In this view the aurora appears blue because of the ultraviolet camera, but a Saturn-based observer would see red light flashes.
根据以此种观点，由于紫外线相机，极光看上去是蓝颜色的，但土星上的观察者看到的可能是红色的闪烁。
Since this dance comes and goes, Earthlings may have such aurora displays more frequently, and they are likely to be red!
这场舞动业已来临又离去，以后将更频繁地出现这种极光展示，并且很可能是红色的！
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