Sunday, July 16, 2017

Newly discovered dual black hole

But it occurred 3 billion years ago. The gravitational waves it produced just got to earth in January of this year. The data is challenging our theories of how black holes are formed and operate. Those waves temporarily "kinked the fabric of space-time itself. [...] The waves shrank and expanded space on Earth by just a fraction of the width of a proton." 

Wikipedia tells us that time is distorted near and inside a black hole. 

"To a distant observer, clocks near a black hole appear to tick more slowly than those further away from the black hole. Due to this effect, known as gravitational time dilation, an object falling into a black hole appears to slow as it approaches the event horizon, taking an infinite time to reach it. [...] On the other hand, indestructible observers falling into a black hole do not notice any of these effects as they cross the event horizon. According to their own clocks, which appear to them to tick normally, they cross the event horizon after a finite time without noting any singular behaviour."

We can wonder about how we can change our perception of space-time, but it doesn't actually change space-time outside our perception. In case you were wondering...

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