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Author Topic: Science is Drokking Fantastic Because...  (Read 88668 times)

The Legendary Shark

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Re: Science is Drokking Fantastic Because...
« Reply #1350 on: 20 October, 2017, 08:41:26 pm »
Just read that article. Do gravitational waves "travel" at the speed of light, then, or have I misunderstood the sequence of events?


TordelBack

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Re: Science is Drokking Fantastic Because...
« Reply #1351 on: 20 October, 2017, 10:13:30 pm »
Yep, as near exactly the same speed, within a variation of only about 1 in 1015, or thereabouts.  Which is something we didn't know, and scuppers a range of current models of dark energy and dark matter which predicted gravity to be faster or slower than light.  Einstein wins again. 

However, the superficially cooler thing for me is the revelation that every atom in my wedding ring was created in a neutron star collision.  And we didn't know that either.

This is one of the best articles I've found so far: https://www.ligo.caltech.edu/news/ligo20171016

The Legendary Shark

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Re: Science is Drokking Fantastic Because...
« Reply #1352 on: 21 October, 2017, 07:36:01 am »
That's an excellent article, Tordels, thanks. I wonder what these "glitches" are, remembering that the first detections of the cosmic microwave background radiation were initially thought to be glitches as well. I also wonder what effects, if any, a gravitational wave might have locally, within a few light years of the causation event - enough to perturb orbits in a solar system or even disturb material objects, or might a local observer see a shimmer in the sky, the gravitational lensing equivalent of heat haze?

More reading to be done!


The Legendary Shark

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Re: Science is Drokking Fantastic Because...
« Reply #1353 on: 16 November, 2017, 07:15:24 am »

TordelBack

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Re: Science is Drokking Fantastic Because...
« Reply #1354 on: 16 November, 2017, 07:28:45 am »
Extraordinarily exciting, innit? Real hair-stander-upper.

The Legendary Shark

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Re: Science is Drokking Fantastic Because...
« Reply #1355 on: 16 November, 2017, 07:36:23 am »
Yes, I think so too. There are already ideas being put forward to intercept the object with a probe but my gut tells me that, now this first one has been discovered, more will be detected which might be easier to get to.

The galaxy gets closer every day!