Small black holes, between three and 20 times the mass of the sun, are created when big stars collapse and leave behind a gravitational pull strong enough to block nearby light rays.
为太阳质量三到20倍的小型黑洞，是在大恒星坍塌时创造的，并且留下一个足以阻止附近光线的重力拉力。
Small black holes, between three and 20 times the mass of the sun, are created when big stars collapse and leave behind a gravitational pull strong enough to block nearby light rays.
为太阳质量三到20倍的小型黑洞，是在大恒星坍塌时创造的，并且留下一个足以阻止附近光线的重力拉力。
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