Science going backwards

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naturalplastic
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05 Feb 2015, 10:57 pm

Narrator wrote:

In his talk, A Universe From Nothing, Lawrence Krauss made me aware of something I hadn't expected.

In many thousands of years, if humans are still here, their science will go backwards in a significant way. By that time, only our galaxy will be visible. The other galaxies will be further away and moving away so fast that we will no longer see them. The very notion of galaxies other than our own will become nothing more than myth, changing how people in that time understand the universe. We have the evidence for what's out there, right now, beyond our own galaxy, but eventually that evidence will disappear.

NO!

Not "thousands of years from now". I saw that video someone posted here (it was good).

More like 100's of billions of years from now.

After we are extinct- some future creatures will evolve in a future galaxy (long long from now, and far far away) who will become intelligent, and have opposible thumbs, and will evolve civilization. And they will look through telescopes, and they will not see stuff that we can see now.

Whats interesting about it is- that implies that there is stuff already out there that WE ourselves can't see. We may already be missing some big part of the picture because our universe has already shaken off evidence visible at an earlier time billions of years ago.

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05 Feb 2015, 11:54 pm

naturalplastic wrote:

Not "thousands of years from now". I saw that video someone posted here (it was good).

More like 100's of billions of years from now.

Yay!
I wondered who would pick up on this.
You are correct.

And yes, I posted that video here a few days ago.

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Tollorin
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06 Feb 2015, 12:01 am

Narrator wrote:

naturalplastic wrote:

Not "thousands of years from now". I saw that video someone posted here (it was good).

More like 100's of billions of years from now.

Yay!
I wondered who would pick up on this.
You are correct.

And yes, I posted that video here a few days ago.

I picked up on this; you didn't see it?

http://wrongplanet.net/forums/viewtopic.php?t=276073&p=6462870#p6462870

Narrator
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06 Feb 2015, 1:04 am

Tollorin wrote:

Narrator wrote:

naturalplastic wrote:

Not "thousands of years from now". I saw that video someone posted here (it was good).

More like 100's of billions of years from now.

Yay!
I wondered who would pick up on this.
You are correct.

And yes, I posted that video here a few days ago.

I picked up on this; you didn't see it?

http://wrongplanet.net/forums/viewtopic.php?t=276073&p=6462870#p6462870

Apologies, Tollorin... you were right too. I was being pedantic on the detail. I did see your post, but I was hoping for a sign of who watched the Krauss video, to correct me on what Krauss actually said.

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06 Feb 2015, 5:28 pm

Fnord wrote:

Currently, our best telescopes have a discernible look-back of over 10,000,000,000 years. This means that even 1,000,000 years from now, our descendent will still have essentially the same view of distant galaxies as we do now.

Not quite Fnord, what Krauss and others are suggesting is that due to the increased speed of the expansion of the universe in around 2 trillion years the thunivers will exceed the speed of light meaning that light waves from other galaxies will become larger the the universe and therefore invisible

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naturalplastic
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06 Feb 2015, 6:01 pm

DentArthurDent wrote:

Fnord wrote:

Well...Fnord obviously missed the video that the OP posted that some of us saw. But he correctly answered the question -as it was stated- which was "many thousands of years from now" (which is hardly the same thing as "a trillion years from now"). The question itsself distorted what the video lecturer said. And the OP admitted that his post was kind of trick question to see if any of us lazy people were paying attention to the video he posted.

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06 Feb 2015, 7:20 pm

Narrator wrote:

Tollorin wrote:

Narrator wrote:

naturalplastic wrote:

Not "thousands of years from now". I saw that video someone posted here (it was good).

More like 100's of billions of years from now.

Yay!
I wondered who would pick up on this.
You are correct.

And yes, I posted that video here a few days ago.

I picked up on this; you didn't see it?

http://wrongplanet.net/forums/viewtopic.php?t=276073&p=6462870#p6462870

To be fair I didn't watched the video, I simply said what was making sense to me; thousand of years is short for the Universe.

DentArthurDent
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06 Feb 2015, 11:27 pm

Naturalplastic I did not read the rest of the posts, nor did I fully read the title, nor did I watch the vid, read the book though. So sorry Fnord, given the statement by the op you answered correctly.

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06 Feb 2015, 11:37 pm

Jacoby wrote:

I don't believe Mankind as we know it will exist in 1,000,0000 years, we have barely made it 200k so far.

The issue will concern any sentient lifeforms on any planet. Essentially in 2 trillion years or so any observer of the cosmos will not be able to discern any other galaxies, no matter where they are situated in the universe.

Oldavid
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08 Mar 2015, 4:22 am

Fnord wrote:

Oldavid wrote:

Narrator wrote:

In his talk, A Universe From Nothing, Lawrence Krauss made me aware of something I hadn't expected. In many thousands of years, if humans are still here, their science will go backwards in a significant way. By that time, only our galaxy will be visible. The other galaxies will be further away and moving away so fast that we will no longer see them. The very notion of galaxies other than our own will become nothing more than myth, changing how people in that time understand the universe. We have the evidence for what's out there, right now, beyond our own galaxy, but eventually that evidence will disappear.

Only if you arbitrarily assume that the Universe is expanding. Presently, the only reason to assume an expanding Universe is the assumption of a "Big Bang".

... and the "Red Shift" of every Galaxy outside of our Local Group.

"Red shift" is arbitrarily assumed to be caused by the "Doppler effect" only because it is convenient to the "Big Bang" paradigm. There are other, more plausible and likely explanations for the phenomenon but they are edited out of the discussion.

Materialist ideologues have already destroyed science... no need to wait.

techstepgenr8tion
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08 Mar 2015, 11:04 am

I suppose if we're willing to play with Hindu units of time we have quite a bit of expansion just that that it will eventually complete a collapse in something like 3.10 trillion years. In that sense for most of the 'Year of Brahma' (maybe a good 3 trillion years of that?) most places in the universe will have a pretty dark sky at night - especially if you don't have a moon! Astronomers better get while the getting is good!

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The_Walrus
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08 Mar 2015, 11:36 am

Oldavid wrote:

Redshift is not assumed to be caused by the Doppler effect. Some of it is, but the expansion of the universe also plays a role - more distant galaxies show greater redshift.

We've observed redshift. We haven't observed inherent differences in the EM spectra of quasars. Sorry, that's neither more plausible nor more likely.

Oldavid
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09 Mar 2015, 4:34 pm

The_Walrus wrote:

Oldavid wrote:

And "more distant galaxies" are assumed to be more distant because they have greater redshift and are receding faster.

You need to do some real homework! Popular media "science docos" are only "infotainment" (sales/marketing gimmicks) flogging snake oil type ideology.

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