Let's take two objects A and B at a different distance of about 29 million light years and are moving away at the rate of expansion similar to that of universe and a ray of light emitted by A toward B and the initial date of their positioning would reach

[billywilliams]

Let's take two objects A and B at a different distance of about 29 million light years and are moving away at the rate of expansion similar to that of universe and a ray of light emitted by A toward B and the initial date of their positioning would reach object B after 29 million years right but let take a short time difference of even a year another ray of light leaving object A toward B and let's assume that the objects are constantly evolving the second ray would still reach object B after more than 29 million years since distance increases due to the expansion but with its current appearance after one year would have changed since its new position changed the this the paradox scientists evade and choose to overlook it and assume that what they see of a distance galaxy is a glimpse of a snapshot taken billions of years ago can you clarify that

[Moontanman]

1 hour ago, billywilliams said:

Let's take two objects A and B at a different distance of about 29 million light years and are moving away at the rate of expansion similar to that of universe and a ray of light emitted by A toward B and the initial date of their positioning would reach object B after 29 million years right but let take a short time difference of even a year another ray of light leaving object A toward B and let's assume that the objects are constantly evolving the second ray would still reach object B after more than 29 million years since distance increases due to the expansion but with its current appearance after one year would have changed since its new position changed the this the paradox scientists evade and choose to overlook it and assume that what they see of a distance galaxy is a glimpse of a snapshot taken billions of years ago can you clarify that

May I suggest grammar? If I understand you correctly you have no idea what you are talking about... Use some grammar, it's quite possible I am not reading what you meant to say correctly. 

[Halc]

This is incredibly hard to parse, but let me attempt something.

On 2/26/2024 at 5:43 PM, billywilliams said:

Let's take two objects A and B at a different distance of about 29 million light years

What does 'different' distance mean? I presume A and B are initially separated by 29 MLY (about 8.9 megaparsecs), but then you indicate that this distance is different from something, but don't say what.

If they both have zero peculiar motion, they will be moving apart at a rate of around 600 km/sec due to expansion.

On 2/26/2024 at 5:43 PM, billywilliams said:

 a ray of light emitted by A toward B and the initial date of their positioning would reach object B after 29 million years right

This travesty of syntax is baffling. What does 'right' mean at the end there? An 'initial date' is a time, and a date isn't something that reaches a destination or otherwise moves, unless we're talking about the kind of dates that grow on trees.

I am guessing that your ray of light emitted from A takes 29 million years to get to B, at which time B will no longer be only 29 MLY away since it is receding at 600 km/sec. B will be over 50,000 light years further away when the light pulse gets there.

 

On 2/26/2024 at 5:43 PM, billywilliams said:

but with its current appearance after one year would have changed since its new position changed the this the paradox scientists evade and choose to overlook it and assume that what they see of a distance galaxy is a glimpse of a snapshot taken billions of years ago can you clarify that

Now you seem to see a paradox in all this somewhere, but your writing skills fail to convey what you claim is paradoxical.

Yes, astronomers looking at something X light years away realize that the object appears in a state and position it was in the past (and not X years in the past if X is large). Nobody is overlooking anything there, but you seem to claim that they're overlooking something.  Sorry, cannot help you. You've not in any way identified what you think is being overlooked

 

Edited April 1 by Halc

[oldpaddoboy]

Not sure what is being asked here, but some important scientific data to remember are, (1) Time always passes at 1 second per second for everyone in all frames of references. (2) It is only when comparing different frames, that time dilation effects come into play. (3) Space and time are interchangeable and can be compared to the two sides of a coin.