Scientists discover first ‘intermediate-mass’ black hole in massive merger – Big Think

• In 2019, scientists detected gravitational waves that were later determined to come from the merging of two so-called “intermediate-mass” black holes.
• These black holes were thought to exist, but had never been directly observed.
• The discovery sheds new light on how black holes form.

In May 2019, a ripple of gravitational waves passed through Earth after traveling across the cosmos for 7 billion years. The ripple came in four waves, each lasting just a fraction…

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