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  What is a black hole?

Black Holes  
What is a black hole? Notes:

If you put enough matter (1) in one small place, it creates a black hole(2), a gravitational field (3)so intense that nothing, not even light, can escape from (4) it.

A black hole is an extremely weird object. Its intense gravitational field changes space and time in fundamental ways. Each black hole has only three measurable properties (5) : mass (6), electrical charge (7), and rotational momentum (8).

Most astronomers now believe that there is a stupendously huge black hole in the inner core of our galaxy, billions of times heavier than the sun. It spins (9) in the center of a rotating whirlpool (10) of hot gas and dust, slowly sucking (11) it in.

(1) 物質(zhì)
(2) 黑洞
(3) 引力場
(3) 密集
(4) 從……逃脫
(5) 明顯的 組成部分
(6) 質(zhì)量
(7) 電荷
(8) 旋轉(zhuǎn)動(dòng)量
(9) 快速旋轉(zhuǎn)
(10) 旋轉(zhuǎn)的漩渦
(11) 吸引

 
 
 
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