Gravitational waves may come from debris ‘cocoons’ around dying stars (video)

The “cocoons” of debris surrounding dying stars appear to be capable of creating tiny ripples in space-time.

So far, astronomers have only detected these ripples, known as gravitational waveswhen they were triggered by cataclysmic mergers of pairs of orbiting black holes, neutron stars or a combination of the two. As these very dense objects spiral towards each other in a cosmic dance spanning millions of years, they distort the fabric of space and time, emitting gravitational waves in the process.

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