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8 September, 11:58

What makes astronomers think there are black holes in space?

1. When galaxies dissapear, they stop emitting infrared radiation, and a hole in space is formed

2. There are areas of space from which no electromagnetic energy of any kind has been deleted

3. At the end of a star's life cycle, it runs out of hydrogen and stops emitting visible light

4. Bursts of light that release large amounts of radio waves precede the formation of a black hole

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  1. 8 September, 14:42
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    I believe it would be 4. bursts of light that release large amounts of radio waves precede the formation of a black hole
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