What is Gravitational Wave? | The Daily Star
12:00 AM, February 26, 2016 / LAST MODIFIED: 12:02 AM, February 26, 2016

What is Gravitational Wave?

The theory, put simply, states that space and time curve in the presence of mass, and that this curvature produces the effect known as gravity. When two black holes orbit each other, they stretch and squeeze space-time like children running in circles on a trampoline, creating vibrations that travel to the very edge; these vibrations are gravitational waves. They pass through us all the time, from sources across the universe, but because gravity is so much weaker than the other fundamental forces of nature—electromagnetism, for instance, or the interactions that bind an atom together—we never sense them. 

– Nicola Twilley, a contributing 
writer at newyorker.com

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