Five reasons gravitational waves matter
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Five reasons why gravitational waves matter

Scientists have detected gravitational waves that could offer a window on the origin of the Universe.

These waves are ripples in the fabric of space-time that are produced when black holes collide and stars explode.

The waves were first proposed 100 years ago by Albert Einstein, as a key prediction of his Theory of General Relativity.

The BBC’s Pallab Ghosh explains why the discovery is so important.

Video production: Ed Ram

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