基本的黑洞是，超大质量黑洞和恒星黑洞。

There are to primary types of black hole, supermassive and stellar.

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这是第一次发现正在出生的恒星黑洞(相对那些巨大的，位于星系中心的黑洞)。

This is the first time a stellar black hole (as opposed those giant, galaxy-centered black holes) has been seen being born.

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“我们知道我们银河系里几十个恒星黑洞，但是不知道它们的年龄。”位于伯克利的加利福尼亚大学的天体物理学家Alex Filippenko说。

"We know of several dozen stellar black holes in our galaxy but don't know their ages," said Alex Filippenko, an astrophysicist at the University of California at Berkeley.

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And even in astrophysics, when you talk about stars, black holes, etcetera you're moving energy around.

即使在天文学中，当你谈论恒星，黑洞等时,你能量的转移。

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