U.S. CitiesCity-Data Forum Index
Go Back   City-Data Forum > General Forums > Science and Technology > Space
 [Register]
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
 
Old 11-09-2019, 02:39 PM
 
Location: Raleigh, NC
1,815 posts, read 1,395,419 times
Reputation: 1909

Advertisements

What does everything think about these new articles coming out - new study claiming the Universe is a sphere?

Honestly, I have trouble understanding even the "flat" universe, probably due to the time sense. The Hubble Deep Field image was taken when it was pointed in a particular direction, and the picture shows all sorts of galaxies all over the place. What if you pointed the Hubble telescope "downward" or "upward" and you will find even more galaxies. How is this a flat universe?

https://www.sciencealert.com/wild-ne...urved-not-flat
Reply With Quote Quick reply to this message

 
Old 11-10-2019, 02:31 AM
 
12,229 posts, read 3,229,016 times
Reputation: 8147
Quote:
Originally Posted by HouseBuilder328 View Post
What does everything think about these new articles coming out - new study claiming the Universe is a sphere?

Honestly, I have trouble understanding even the "flat" universe, probably due to the time sense. The Hubble Deep Field image was taken when it was pointed in a particular direction, and the picture shows all sorts of galaxies all over the place. What if you pointed the Hubble telescope "downward" or "upward" and you will find even more galaxies. How is this a flat universe?

https://www.sciencealert.com/wild-ne...urved-not-flat
That is absolutely terrifying to think about!!


Seems like the more we learn about the vastness of space...the smaller and more insignificant we get!
Reply With Quote Quick reply to this message
 
Old 11-10-2019, 10:19 AM
 
22,779 posts, read 17,257,359 times
Reputation: 9491
Quote:
Originally Posted by HouseBuilder328 View Post
What does everything think about these new articles coming out - new study claiming the Universe is a sphere?

Honestly, I have trouble understanding even the "flat" universe, probably due to the time sense. The Hubble Deep Field image was taken when it was pointed in a particular direction, and the picture shows all sorts of galaxies all over the place. What if you pointed the Hubble telescope "downward" or "upward" and you will find even more galaxies. How is this a flat universe?

https://www.sciencealert.com/wild-ne...urved-not-flat
The idea of the universe being flat doesn't mean flat like a piece of paper (basically two dimensional). What it means is that in a flat universe space does not curve back on itself so that if you were to start out in a straight line, that line would never eventually come back on itself as it would in a closed universe. If you walked in a straight line around the earth you would eventually return to your starting point. The same is true if the universe is closed or curved. In a closed universe if you traveled in a straight line you would eventually return to your starting point. Or to put it another way, in a closed universe, if you could see far enough you would see the back of your own head.

In an open or flat universe a straight line would just keep going forever and never curve back on itself.

Last edited by Mike555; 11-10-2019 at 11:13 AM..
Reply With Quote Quick reply to this message
 
Old 11-10-2019, 10:39 AM
 
22,779 posts, read 17,257,359 times
Reputation: 9491
Quote:
Originally Posted by rstevens62 View Post
That is absolutely terrifying to think about!!


Seems like the more we learn about the vastness of space...the smaller and more insignificant we get!
Why is that terrifying to you?
Reply With Quote Quick reply to this message
 
Old 11-10-2019, 12:22 PM
 
Location: Raleigh, NC
1,815 posts, read 1,395,419 times
Reputation: 1909
Quote:
Originally Posted by rstevens62 View Post
That is absolutely terrifying to think about!!

Seems like the more we learn about the vastness of space...the smaller and more insignificant we get!


It's incredible to think about the size of the Universe. At least as human beings, we can understand the size (somewhat anyway).

Makes you think what is the point of all this size?

Check out this great link about the Hubble extreme deep field image:
https://www.nasa.gov/mission_pages/h...ience/xdf.html
Reply With Quote Quick reply to this message
 
Old 11-10-2019, 02:37 PM
 
Location: Here
1,480 posts, read 362,806 times
Reputation: 5479
Quote:
Originally Posted by rstevens62 View Post
That is absolutely terrifying to think about!!

Seems like the more we learn about the vastness of space...the smaller and more insignificant we get!
We live on one planet orbiting one star out of hundreds of billions in the Milky Way. Does it really matter if there are millions or billions or trillions of other galaxies? Regardless, our corner of the universe is an extraordinarily tiny one compared to all that's out there.

And what's with this need for humanity to be significant on a cosmic scale? You're alive. You have your life. Is that somehow diminished for you if there are more supergiants and more black holes and more galactic clusters than you thought there were ten years ago?

It's all fascinating, yes. But terrifying?

Reply With Quote Quick reply to this message
 
Old 11-10-2019, 05:47 PM
 
5,203 posts, read 8,207,066 times
Reputation: 3188
Quote:
Originally Posted by HouseBuilder328 View Post
It's incredible to think about the size of the Universe. At least as human beings, we can understand the size (somewhat anyway).

Makes you think what is the point of all this size?
The point of all this size of the Universe is explained as a rapid FTL period of the emergence and sudden Inflation of space and time after the instant moment of the Big Bang, followed by 13.8 billion years of continued expansion, as well as the accelerated expansion of space. We can sort of understand some of it in terms of numbers, but it's really difficult to wrap our brains around it in a way that makes sense to comprehend just how large the Universe really is. We have images of galaxies that are far distant in space, but they're also far distant in the past of time. We don't see things as they are right now. We see things as they were. The Universe is a weird place.
Reply With Quote Quick reply to this message
 
Old 11-11-2019, 03:43 PM
 
2,959 posts, read 1,122,120 times
Reputation: 1982
I’ve read a number of articles about this. Either ways, the curvature is likely to take place outside of the boundaries of the observable universe.

On another note, I have to say that I agree with what another user said. The scale is meaningless on a human level, since we have yet to establish a permanent presence on our nearest neighbour the Moon. To that extent, the Milky Way, might as well be the whole universe.
Reply With Quote Quick reply to this message
 
Old 11-11-2019, 04:00 PM
 
Location: Seattle
2,298 posts, read 490,180 times
Reputation: 2134
To me a closed Universe is a little easier to comprehend than an open, infinite Universe.
Reply With Quote Quick reply to this message
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.

Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.


Reply

Quick Reply
Message:

Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > General Forums > Science and Technology > Space
Similar Threads
Follow City-Data.com founder on our Forum or

All times are GMT -6.

© 2005-2019, Advameg, Inc. · Please obey Forum Rules · Terms of Use and Privacy Policy · Bug Bounty

City-Data.com - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 - Top