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Subject: Re: Galaxies don't fly apart because their entire frame is rotating
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Le 11/04/2024 à 10:51, Thomas Heger a écrit :
> Am 10.04.2024 um 15:30 schrieb J. J. Lodder:
> 
>>>>>
>>>>> Also, perhaps our current state of the art technology wrt observing the
>>>>> universe from our little earth is damn near pre embryonic wrt the grand
>>>>> scheme of things... ;^)
>>>>>
>>>>
>>>> Usual observations from our perspective of the universe would require to
>>>> remove the effects of the delay, which is caused by the finite speed of
>>>> light.
>>>>
>>>> But this is not done.
>>>
>>> Of course it is done!!!
>>>
>>> You have definitely never read any paper about astronomy, or the history
>>> of astronomy. As a matter of fact one of the main issue in astronomy is
>>> to determine the distance of objects as precisely as possible.
>>>
>>> Thomas, why are you constantly making up stuff of that kind? Is it malice
>>> or stupidity?
>>>
>>> Both?
>>
>> Hanlon's razor applies, I think.
>>
>> And for amusement: noting different delays of quasar fluctuations,
>> in passing through an Einstein lens, is a practical way
>> of establishing their cosmological distance,
> 
> Sure, the delay is known.
> 
> But how would you remove it?
> 
> The difference in time is actually HUGE, hence you would need to wait a 
> VERY long time, if you want to know the present position of stars seen a 
> few billion light years away.

*facepalm*

Q. How to know what week day and month day will tomorrow be ?
A. Wait 24 hours, then look at your phone

> In the meantime cosmologists explain the positions of stars, which do 
> not belong to the same time.

In the meantime cosmologists are not idiots, they know about physics 
(while you do not).