There is no way for a human to perceive or to imagine or conceptualize the density and quantity of energy that is involved, the scientists brains are running out of informations and their mouths are running out of control IMHO.One of the rites of passage of a child is to satisfactorily complete a colouring book!
However, scientists can be a silly lot when when it comes to naming things
These days the young people are terribly lacking of reasonable "rites of passage", some of them are dying of stupid challenges like drinking extremely hot water or eating detergent capsules, in this case every and scientists brains and mouths become closed.
There's no accounting for stupidity!
Steven Hawking once said "We spend a great deal of time studying history which, let's face it, is mostly the history of stupidity."
I will not call it stupidity, try to imagine if a specie is able to look at a black hole as if it is something usual, what are they thinking ?
I agree Silverprout, it's not stupidity, we just don't know better ;-P
On the other hand, looking at human history, and how stupid decisions seem to repeated ad nauseum... It's a wonder we're still here.
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Cheers guys!
I'm toasting you all with my homebrewed half pilsner, quart sour ale and quart bayer, with a little bit of maple syrup thrown in for good measure.
On the other hand, looking at human history, and how stupid decisions seem to repeated ad nauseum... It's a wonder we're still here.
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Cheers guys!
I'm toasting you all with my homebrewed half pilsner, quart sour ale and quart bayer, with a little bit of maple syrup thrown in for good measure.
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These childs have done this to be accepted by a group, we must be aware of it.
Hah! Good 'ol group pressure, with some mixed in controlling behaviour and a bit of coercion control, with underlying decision motives stemming from the very most basic of needs for existence, nutrition, reproduction, recreation.
No wonder Democracy is dubbed "Currently the least bad form of government systems".
Cheers to you mate, hope it's all good over there. I'll go fill up another beer from my primitive tap system.
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And take a picture of it!
Very happy, much easier than all those bottles!
No wonder Democracy is dubbed "Currently the least bad form of government systems".
Cheers to you mate, hope it's all good over there. I'll go fill up another beer from my primitive tap system.
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And take a picture of it!
Very happy, much easier than all those bottles!
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Nothing is good or bad, you are free to do help this world to survive if you have an idea.
You've decided to save the beer.
You cannot change people, you can only change yourself.
If people choose self delusion and vanity, then there's very little to be done.
And if well controlled group dynamics is to be a "good" form of government, then I dread what the future will bring.
I've found just the beer for this thread - Quantum Beer!
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Returning to black holes:
One of the predictions of Einstein's general theory of relativity is that light will lose energy as it struggles to move through an intense gravitational field.
Astronomers have been studying a star which is hurtling around the supermassive black hole at the centre of our galaxy, completing its oval-shaped orbit in just 16 years.
YouTube
When the star is at its closest approach to the black hole, its light slows down. This shows up as a stretching of the star's light toward the less energetic, redder wavelengths.
Gravitational red shifts are well known, but this is the first direct test of how gravity works near a supermassive black hole. The astronomers have measured that the light from the star slows down by 125 miles per second, which is exactly as predicted by Einstein's theory of general relativity.
One of the predictions of Einstein's general theory of relativity is that light will lose energy as it struggles to move through an intense gravitational field.
Astronomers have been studying a star which is hurtling around the supermassive black hole at the centre of our galaxy, completing its oval-shaped orbit in just 16 years.
YouTube
When the star is at its closest approach to the black hole, its light slows down. This shows up as a stretching of the star's light toward the less energetic, redder wavelengths.
Gravitational red shifts are well known, but this is the first direct test of how gravity works near a supermassive black hole. The astronomers have measured that the light from the star slows down by 125 miles per second, which is exactly as predicted by Einstein's theory of general relativity.
Could you show me a "good" exemple ?
Here is a fantastic beer for you :
And the red spectrum shift is not visible by an human eye.Returning to black holes:
One of the predictions of Einstein's general theory of relativity is that light will lose energy as it struggles to move through an intense gravitational field.
Astronomers have been studying a star which is hurtling around the supermassive black hole at the centre of our galaxy, completing its oval-shaped orbit in just 16 years.
YouTube
When the star is at its closest approach to the black hole, its light slows down. This shows up as a stretching of the star's light toward the less energetic, redder wavelengths.
Gravitational red shifts are well known, but this is the first direct test of how gravity works near a supermassive black hole. The astronomers have measured that the light from the star slows down by 125 miles per second, which is exactly as predicted by Einstein's theory of general relativity.
Here is a fantastic beer for you :
(We have our own hops bilogic production)
PS : i'm not off topic, this is black beers.
Of course it isn't, and neither are the mountains on Mars!
I'm afraid I don't understand what you mean by your statement.
I trust you understand that the red shift is detected through sophisticated spectroscopic analysis, the results of which are ultimately visible to the human eye.
The star in question is snappily named SO-2 and the attachment shows its spectral analysis.
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This is the flux variation in the UV portion of the electromagnetic spectrum, the wavelenght become shorter, therefore a little less blue but still blue.
Have you an idea of the future destination of SO-2 ?
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The spectral analysis shows the H 1 line shifting towards the longer wavelengths in the e/m spectrum.
Using the term 'red shift' is another example of a poor choice of a scientific term. In the case of the H1 line, it simply means a shift towards longer wavelengths.
As to Star SO-2, its ultimate fate will be to spiral to its destruction in the heart of the supermassive black hole, something which won't happen in our lifetime.
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There are no explanations,TBO, i don't know why there is a notch in this well repartited energy field.
Who needs explanations when you can just be mind-boggled by the figures! 
Star SO-2 has the fastest ballistic orbit yet measured, travelling at almost 3% of the speed of light at its closest approach to the supermassive black hole.
The black hole itself is estimated to have a mass equal to 14 solar masses.
More recently, a star named SO-102 has been found orbiting even closer to the black hole, with a shorter orbital period of 11.5 years.
S2 (star - Wikipedia)
Star SO-2 has the fastest ballistic orbit yet measured, travelling at almost 3% of the speed of light at its closest approach to the supermassive black hole.
The black hole itself is estimated to have a mass equal to 14 solar masses.
More recently, a star named SO-102 has been found orbiting even closer to the black hole, with a shorter orbital period of 11.5 years.
S2 (star - Wikipedia)
the notch shifting is located in the spectral line of radiation of the hydrogen atoms ?
What is He, helium ?
The electromagnetic radiation wavelenght is 21.1061140542 cm in free space and there is a sliding notch in the radiation spectral line considered as a "red shift", the analogy to the human perceptible colors seems to be an extreme vulgarity, it can hurt some minds IMHO.
Who needs explanations when you can just be mind-boggled by the figures!
Star SO-2 has the fastest ballistic orbit yet measured, travelling at almost 3% of the speed of light at its closest approach to the supermassive black hole.
The black hole itself is estimated to have a mass equal to 14 solar masses.
More recently, a star named SO-102 has been found orbiting even closer to the black hole, with a shorter orbital period of 11.5 years.
S2 (star - Wikipedia)
Has the gravity an effect on the orbital period ?
Your link don't work, here is a fix : S2 (star) - Wikipedia
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You will be aware that the closer a satellite is to the body around which it orbits, the shorter the period of its orbit. For example, the orbital period of Neptune is 165 years while the orbital period of Earth is only 1 year.
Newton, by combining his three laws of motion and his law of universal gravitation, was able to verify Kepler's 3rd law of planetary motion which states that the square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit - i.e. the farther a planet is from the Sun, the longer its orbit, and vice versa.
The same basic physics applies to the stars orbiting the supermassive black hole at the centre of the galaxy, but there are additional relativistic effects due to the black hole's intense gravitational field. It is these relativistic effects that astronomers are now able to measure and verify.
A pdf of the full 78 pages describing the measurements involved may be found here: https://arxiv.org/pdf/1907.10731.pdf
Once you've read and understood it, please be so kind as to explain it to me!
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