Einstein Was Right   Leave a comment

Gravitational Waves

To watch a fascinating video from the New York Times, click http://nyti.ms/1SKjTJ5

It’s all over the internet: Einstein was right – there are such things as gravitational waves.

In a seemingly impossible experiment, a group of astrophysicists announced on Thursday, February 11, 2016 that they now had aural evidence of gravitational waves. An international mega-group of 1000 scientists published a report in Physical Review Letters confirming their findings.

For those of you who might be asking, “What are gravitational waves?”, here’s a quick definition. They’re ripples in spacetime created by any particle or object with mass. Einstein predicted them in his theory of relativity in 1916.

In a classic case of “if a tree falls in the woods, does it make a sound,” two black holes collided so impossibly far away – a billion light years – and only now is the Earth receiving the noise from that cataclysmic event.

Two antennas designed for receiving any sound a gravitational wave would generate, located in Washington State and Louisiana, and part of LIGO (Laser Interferometer Gravitational-Wave Observatory), picked up a brief chirp on September 14, 2015.

This event’s also a significant achievement for astronomy, where so much is dependent upon what can been seen. This experiment delivers another dimension from which to observe and measure the universe.

If you’d like to read more about this important confirmation of Einstein’s theory of relativity, here are a few sources:

 

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