According to observations of young sunlike stars, our Sun may have lost as much as six percent of its initial mass.
2
首先，画面左侧是一颗冒险过于接近黑洞的类太阳恒星，此时黑洞的引力压倒了恒星的自身引力。
First, the intact sun-like star (left) ventures too close to the black hole, and its own self-gravity is overwhelmed by the black hole's gravity.
3
行星状星云是类太阳恒星在其生命最后阶段形成的，50亿年后太阳核燃料耗尽时也将面临这样的命运。
Planetary nebulae are produced during a final phase in the life of a sun-like star, an example of the fate that awaits the sun when it runs out of nuclear fuel in another 5 billion years.
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