Upwards of a billion stars in our galaxy have burnt up their internal energy sources, and so can no longer produce the heat a star needs to oppose the inward force of gravity.

在我们的星系中，超过10亿颗恒星已经耗尽了它们的内部能量来源，因此无法再产生恒星所需的热量来对抗向内的引力。

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If the fixed star spun just 20% faster, the centrifugal force would fling it apart.

如果该恒星的旋转加快仅仅20%，那么离心力就会将其甩得粉碎。

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If the star spun just 20% faster, the centrifugal force would fling it apart.

如果该恒星的旋转加快仅仅20%，那么离心力就会其撕裂。

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Eritrea looked bereft of ideas, while Zimbabwe relied on early balls to their star strike force of Peter Ndlovu and Benjani Mwaruwari, though both failed to convert after runs on goal.

BBC: Eritrea fall to Zimbabwe

Two headset-based toys released in 2009 Uncle Milton's Star Wars Force Trainer and Mattel's Mindflex used players' concentration and relaxation levels, gauged by comparing brain waves of different frequencies, to make a ball rise or fall using airflow from a fan.

ECONOMIST: Brainwave controllers

These included Fallout: New Vegas, Darksiders, Need for Speed: Hot Pursuit, NBA 2k11, TRON Evolution, Call of Duty: Black Ops, Starcraft 2, Star Wars the Force Unleashed 2, Two Worlds II, The Sims 3: Late Night.

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