NASA launched the Swift gamma-raytelescope thinking it would give scientists a way to monitor the births of black holes.
在恒星被黑洞摧毁的一瞬间,会发射出强大的γ射线,就如同它发出的SOS信号一样。
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The Fermi Space Telescope is so sensitive to these gammaray bursts that it doesn't even need to be positioned right over a thunderstorm to detect the TGFs.