The universe hums with gravitational waves. Here’s why scientists are so excited about the discovery

The very fabric of the universe rings with gravitational waves from its earliest epoch, and researchers have finally “heard” this cosmic symphony.

On Thursday, June 28, the North American Nanohertz Gravitational-Wave Observatory (NANOGrav) announced the detection of low-frequency gravitational waves, a historic achievement that represents a 15-year search. However, this is not the first time that humanity has detected gravitational waves. Scientists have detected these waves in the fabric of space using instruments such as the Laser Interferometer Gravitational-Wave Observatory (LIGO) since 2015.

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