A close encounter with another star put the doomed star (orange circle) on a path that took it near a supermassive black hole.
一颗过于接近已经熄灭的恒星的恒星，会进入一颗超级巨型黑洞的轨道。
It started as a small orange circle and then grew bigger and bigger till all the colours came out... it lasted for about 15 minutes and it slowly went off.
它开始是一个小的橙色圆圈，然后变得越来越大，直到所有的颜色出来…持续了约15分钟后慢慢消失。
Two points determine a great circle on a sphere, so for any two points, cut the orange into half.
球面上的两点确定一条圆弧，因此任意两点可将橙子切成两块。
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