Spaceships and astronomy
Sep 2nd 2020, 8:09 pm
#346
Yo
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Re: Spaceships and astronomy
Except this isn't the first observation, and the observed facts fit existing theories. If you are versed in the physics, this is, yes, its tapping for the very edges of our ability to make measurements, but LIGO now is already much more sensitive than the original LIGO of a couple of years ago. Its still not at the theoretical performance limit
Sep 2nd 2020, 8:23 pm
#347
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Re: Spaceships and astronomy
No, the waves are emitted as large masses rotate very rapidly in the final moments, then, once the merger has happened, the motion ceases. Yes, theoretically there will be some disturbance, but the current instruments have a limited band of frequencies they can actually detect.
Here you can HEAR the result of the collision. Bear in mind, these are things 50x more massive than the sun, rotating at hundreds of times a second, just before the collision, and they get faster and faster until they merge
Here you can HEAR the result of the collision. Bear in mind, these are things 50x more massive than the sun, rotating at hundreds of times a second, just before the collision, and they get faster and faster until they merge
Sep 2nd 2020, 8:30 pm
#348
Yo
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Re: Spaceships and astronomy
No, the waves are emitted as large masses rotate very rapidly in the final moments, then, once the merger has happened, the motion ceases. Yes, theoretically there will be some disturbance, but the current instruments have a limited band of frequencies they can actually detect.
https://www.youtube.com/6watch?v=JKBBVgR991s
Here you can HEAR the result of the collision. Bear in mind, these are things 50x more massive than the sun, rotating at hundreds of times a second, just before the collision, and they get faster and faster until they merge
https://www.youtube.com/6watch?v=JKBBVgR991s
Here you can HEAR the result of the collision. Bear in mind, these are things 50x more massive than the sun, rotating at hundreds of times a second, just before the collision, and they get faster and faster until they merge
Sep 2nd 2020, 8:45 pm
#349
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Sep 2nd 2020, 9:13 pm
#350
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Re: Spaceships and astronomy
The unmodified version of what is detected is the first sample in the little video, it really only lasts for a second or two. The detector can't "hear" signals below about 30Hz, which is a very deep tone for us, and likewise it can't hear above about 7kHz. So these two massive objects spin around each other at less than 20 times a second, we can't hear them, and if they go more than 10,000 times per second we can't hear them either.....
Sep 2nd 2020, 9:27 pm
#352
Yo
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Re: Spaceships and astronomy
Sep 2nd 2020, 9:31 pm
#353
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Sep 2nd 2020, 9:42 pm
#354
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Re: Spaceships and astronomy
Hmmm. [Mulling over previous exchange.] 
Well bear in mind that the black hole has all its mass concentrated at a singularity (point of zero volume), so its not like the two event horizons are in any way representative of an amount of matter that needs to merge.
The event horizon of the black hole is just a "light vacuum" (volume of space from which light cannot escape). So a black hole of 70 solar masses would have an event horizon diamter of about 250 miles, but two black holes of that size (of event horizon) will merge in the blink of an eye as the two singularities merge.
but perhaps that's the case. I suppose the whole universe did start in less than an instant.
The event horizon of the black hole is just a "light vacuum" (volume of space from which light cannot escape). So a black hole of 70 solar masses would have an event horizon diamter of about 250 miles, but two black holes of that size (of event horizon) will merge in the blink of an eye as the two singularities merge.
Sep 2nd 2020, 10:58 pm
#355
Yo
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Re: Spaceships and astronomy
Hmmm. [[i]Mulling over previous exchange.]
Well bear in mind that the black hole has all its mass concentrated at a singularity (point of zero volume), so its not like the two event horizons are in any way representative of an amount of matter that needs to merge.
The event horizon of the black hole is just a "light vacuum" (volume of space from which light cannot escape). So a black hole of 70 solar masses would have an event horizon diamter of about 250 miles, but two black holes of that size (of event horizon) will merge in the blink of an eye as the two singularities merge.
Well bear in mind that the black hole has all its mass concentrated at a singularity (point of zero volume), so its not like the two event horizons are in any way representative of an amount of matter that needs to merge.
The event horizon of the black hole is just a "light vacuum" (volume of space from which light cannot escape). So a black hole of 70 solar masses would have an event horizon diamter of about 250 miles, but two black holes of that size (of event horizon) will merge in the blink of an eye as the two singularities merge.
Oct 2nd 2020, 4:53 pm
#356
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Re: Spaceships and astronomy
Nasa go catches up with the fact that women have different plumbing: https://www.bbc.com/news/world-us-canada-54387288
Oct 2nd 2020, 4:59 pm
#357
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Re: Spaceships and astronomy
Nasa go catches up with the fact that women have different plumbing: https://www.bbc.com/news/world-us-canada-54387288
Oct 4th 2020, 10:04 pm
#358
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Nov 30th 2020, 10:30 pm
#359
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Re: Spaceships and astronomy
We all know that space is big. Really big. You just won't believe how vastly hugely mind-bogglingly big it is.
But it seems that that there are vastly more galaxies in it than the figures that have been thrown about over the past 20-30 years.
But it seems that that there are vastly more galaxies in it than the figures that have been thrown about over the past 20-30 years.
Nov 30th 2020, 11:35 pm
#360
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Re: Spaceships and astronomy
We all know that space is big. Really big. You just won't believe how vastly hugely mind-bogglingly big it is.
But it seems that that there are vastly more galaxies in it than the figures that have been thrown about over the past 20-30 years.
https://www.youtube.com/watch?v=wFFS8cewBCU
But it seems that that there are vastly more galaxies in it than the figures that have been thrown about over the past 20-30 years.
https://www.youtube.com/watch?v=wFFS8cewBCU
The Roman Space Telescope is about to change astronomy to the same degree that Hubble did decades ago. The Roman will be able to do the equivalent of fifty years of Hubble observations in one year.:
https://en.wikipedia.org/wiki/Nancy_...pace_Telescope