天文学家们已经发现了数以百计的系外行星，但是没有一任何一颗可以和新发现的这颗相媲美，因为它正环绕着一颗不可思议的恒星运行。

Astronomers have already discovered hundreds of exoplanets. But make way for the new kid. Which is orbiting a kind of star that models say it shouldn't.

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天文学家有何证据证明黑洞的存在呢？

What evidence do astronomers have that black holes exist?

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天文学家有何证据证明黑洞的存在呢？

What evidence do astronomers have that black holes exist?

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