The Universe

Message boards : Science (non-SETI) : The Universe
Message board moderation

To post messages, you must log in.

1 · 2 · 3 · 4 . . . 6 · Next

AuthorMessage
Profile AndrewMarcio
Avatar

Send message
Joined: 9 Oct 17
Posts: 501
Credit: 22,875
RAC: 0
Italy
Message 1898902 - Posted: 3 Nov 2017, 16:54:05 UTC

I have a lot of questions. Who answers me?

The Far Future of Universe

After the end of Universe, does It star again?
We live in a infinite loop?
The Universe has its the edges?
If the Universe is finite and if existing other infinity Universes almost like at ours, what is there between the Universes?
ID: 1898902 · Report as offensive
OzzFan Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Apr 02
Posts: 15691
Credit: 84,761,841
RAC: 28
United States
Message 1898980 - Posted: 3 Nov 2017, 22:57:44 UTC - in response to Message 1898902.  

I'm not sure if this is meant to be fun or if you're looking for factual answers about the Universe that we simply don't have.

For example,

After the end of Universe, does It star again?


We don't know there is an "end" of the Universe. Our knowledge as of right now suggests that the Universe is expanding, but we don't know into what, or how it is still accelerating instead reaching entropy, and as far as we can tell "reality" is created as the Universe expands. We can't, with our current tools, know what is outside the boundary of our known Universe.

We live in a infinite loop?


No. Definitely not a loop. Depending on what theory you believe, more like an oblong sphere, or possibly like a cone like this:



Or this:



The Universe has its the edges?


Yes, as best we can tell based upon our inside-looking-out view.

If the Universe is finite and if existing other infinity Universes almost like at ours, what is there between the Universes?


There's currently no evidence that there are other Universes, or even an infinity of them. As best we can tell with our current tools and understanding, there is only one all-encompassing Universe that is rapidly expanding. We don't know what it is expanding into or why it is accelerating. We don't know what caused the explosion that created it or what came before it, if anything at all.
ID: 1898980 · Report as offensive
Profile AndrewMarcio
Avatar

Send message
Joined: 9 Oct 17
Posts: 501
Credit: 22,875
RAC: 0
Italy
Message 1899050 - Posted: 4 Nov 2017, 7:28:23 UTC
Last modified: 4 Nov 2017, 7:29:33 UTC

I'm not sure if this is meant to be fun or if you're looking for factual answers about the Universe that we simply don't have.


Both. I'm just curious.
ID: 1899050 · Report as offensive
Profile AndrewMarcio
Avatar

Send message
Joined: 9 Oct 17
Posts: 501
Credit: 22,875
RAC: 0
Italy
Message 1899060 - Posted: 4 Nov 2017, 8:48:28 UTC - in response to Message 1899055.  

@Chris S

Really, i'm just curious.
If we could having the technology for travels through Universe I'm would journey for watching all this.
ID: 1899060 · Report as offensive
Profile tullio
Volunteer tester

Send message
Joined: 9 Apr 04
Posts: 8797
Credit: 2,930,782
RAC: 1
Italy
Message 1899073 - Posted: 4 Nov 2017, 10:47:01 UTC

Concorde blurb: breakfast in London and lunch in New York. Someone added: and baggage in Hong Kong.
Tullio
ID: 1899073 · Report as offensive
Profile AndrewMarcio
Avatar

Send message
Joined: 9 Oct 17
Posts: 501
Credit: 22,875
RAC: 0
Italy
Message 1899115 - Posted: 4 Nov 2017, 16:00:24 UTC - in response to Message 1899066.  

@Chris S

Dreaming does not cost anything. Was only for talking about and ask questions.
ID: 1899115 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1383
Credit: 2,098,506
RAC: 5
Message 1899136 - Posted: 4 Nov 2017, 18:11:49 UTC

If our universe isn't part of a multiverse, made up of a great may other universes, then we'll have a very hard time explaining why, in only one roll of the dice, we have conditions that allow the existence of life and intelligence.

The values of forces, and constants, and the properties of matter and energy could easily have been very different in a great variety of ways, and so precluded out existence. A multiverse allows for a great many universes, each with its own set of conditions. It's reasonable that some tiny fraction of these universes could have allowed life and intelligence to exist, including our own.
ID: 1899136 · Report as offensive
OzzFan Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Apr 02
Posts: 15691
Credit: 84,761,841
RAC: 28
United States
Message 1899163 - Posted: 4 Nov 2017, 20:14:04 UTC - in response to Message 1899136.  

If our universe isn't part of a multiverse, made up of a great may other universes, then we'll have a very hard time explaining why, in only one roll of the dice, we have conditions that allow the existence of life and intelligence.


There doesn't need to be an explanation. It's all a matter of probabilities and chance. It is possible that we are the only ones. In fact, there doesn't need to be other Universes to have more than one place for life. There could be other life right here in our own Universe.
ID: 1899163 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1383
Credit: 2,098,506
RAC: 5
Message 1899189 - Posted: 4 Nov 2017, 22:38:07 UTC
Last modified: 4 Nov 2017, 22:38:34 UTC

It may be possible, but it's still extremely improbable that a single, randomly configured, universe would contain life and intelligence. I wasn't referring to the possibility that life might occur in many places, in a universe like our own, where life is already known to exist. I had reference to an entire universe with physical properties that preclude life and intelligence.
ID: 1899189 · Report as offensive
Profile Gordon Lowe
Avatar

Send message
Joined: 5 Nov 00
Posts: 12094
Credit: 6,317,865
RAC: 0
United States
Message 1899207 - Posted: 5 Nov 2017, 1:15:49 UTC - in response to Message 1899055.  

But all that is almost impossible to assimilate for us mere humans as we live in a finite world. If I gave you a book you could see the length, width, thickness, i.e. its entirety. The concept of infinity is something our brains simply cannot comprehend.

Good analogy. :~)
The mind is a weird and mysterious place
ID: 1899207 · Report as offensive
Profile Gordon Lowe
Avatar

Send message
Joined: 5 Nov 00
Posts: 12094
Credit: 6,317,865
RAC: 0
United States
Message 1899211 - Posted: 5 Nov 2017, 1:43:30 UTC

I'm personally a believer in the idea of multiverses partly because if time travel is possible, I think a new reality(an alternate timeline) opens up to accommodate the ramifications of going into the past and changing what has already happened. Likewise, if there are dimensions more than the three we are accustomed to, those would be co-existing with ours, without us knowing.
The mind is a weird and mysterious place
ID: 1899211 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1383
Credit: 2,098,506
RAC: 5
Message 1899222 - Posted: 5 Nov 2017, 3:51:01 UTC

One thing that bothers me about the multiverse hypothesis is this: it seems to imply that every branching of probability would create a new universe. Wouldn't this mean that every time you throw a die, five new universes are created? One of six possible numbers comes up in our universe. Each of the other five numbers come up in one of five new universes. That sounds pretty weird and improbable, doesn't it?
ID: 1899222 · Report as offensive
Profile Gordon Lowe
Avatar

Send message
Joined: 5 Nov 00
Posts: 12094
Credit: 6,317,865
RAC: 0
United States
Message 1899231 - Posted: 5 Nov 2017, 4:49:09 UTC - in response to Message 1899222.  

One thing that bothers me about the multiverse hypothesis is this: it seems to imply that every branching of probability would create a new universe.

Of course, there are (seemingly) infinite possibilities in how we progress through our lives, but I think what we do here in the world we all know is a one-way street.

My feeling about multiverses is more about the effects of traveling close to the speed of light or faster.
The mind is a weird and mysterious place
ID: 1899231 · Report as offensive
OzzFan Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Apr 02
Posts: 15691
Credit: 84,761,841
RAC: 28
United States
Message 1899233 - Posted: 5 Nov 2017, 4:55:03 UTC - in response to Message 1899222.  

I think that's more on the theoretical side of the multiverse theory. "What if I had thrown a 5 instead of a six?" "What if Hitler won WWII?" "What if the asteroid that killed off the dinosaurs had missed?" For each question a theoretical Universe could be imaged.

If there are multiple Universes, there's no reason to believe they are mirrors to our own with different probable outcomes. Of course that idea could be true, but again, we're venturing off into speculation and not observable fact. When speculating about the unknown, anything's possible. ;-)
ID: 1899233 · Report as offensive
OzzFan Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Apr 02
Posts: 15691
Credit: 84,761,841
RAC: 28
United States
Message 1899243 - Posted: 5 Nov 2017, 5:53:32 UTC - in response to Message 1899231.  

Of course, there are (seemingly) infinite possibilities in how we progress through our lives, but I think what we do here in the world we all know is a one-way street.


If that were true, then there's no concept of choice or free will. I.e. "Everything that happens, happens for a reason and couldn't have happened any other way." That kind of thinking is very problematic, to put it politely.
ID: 1899243 · Report as offensive
Profile Gordon Lowe
Avatar

Send message
Joined: 5 Nov 00
Posts: 12094
Credit: 6,317,865
RAC: 0
United States
Message 1899245 - Posted: 5 Nov 2017, 6:10:57 UTC - in response to Message 1899243.  

Of course, there are (seemingly) infinite possibilities in how we progress through our lives, but I think what we do here in the world we all know is a one-way street.


If that were true, then there's no concept of choice or free will. I.e. "Everything that happens, happens for a reason and couldn't have happened any other way." That kind of thinking is very problematic, to put it politely.

When I say it's a one-way street, I mean our decisions in this life go forward in a linear way, not for a reason, but just onward.
The mind is a weird and mysterious place
ID: 1899245 · Report as offensive
Profile Lynn Special Project $75 donor
Volunteer tester
Avatar

Send message
Joined: 20 Nov 00
Posts: 14162
Credit: 79,603,650
RAC: 123
United States
Message 1899251 - Posted: 5 Nov 2017, 6:51:05 UTC - in response to Message 1899245.  


Scientists baffled: Universe shouldn't exist


Scientists will never figure out how The Universe Works.
ID: 1899251 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1383
Credit: 2,098,506
RAC: 5
Message 1899301 - Posted: 5 Nov 2017, 14:29:11 UTC - in response to Message 1899243.  

Of course, there are (seemingly) infinite possibilities in how we progress through our lives, but I think what we do here in the world we all know is a one-way street.


If that were true, then there's no concept of choice or free will. I.e. "Everything that happens, happens for a reason and couldn't have happened any other way." That kind of thinking is very problematic, to put it politely.


Would it really be preferable if we could say things happen for no reason? That sounds like chaos to me.
ID: 1899301 · Report as offensive
OzzFan Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Apr 02
Posts: 15691
Credit: 84,761,841
RAC: 28
United States
Message 1899302 - Posted: 5 Nov 2017, 14:41:41 UTC - in response to Message 1899301.  

Of course, there are (seemingly) infinite possibilities in how we progress through our lives, but I think what we do here in the world we all know is a one-way street.


If that were true, then there's no concept of choice or free will. I.e. "Everything that happens, happens for a reason and couldn't have happened any other way." That kind of thinking is very problematic, to put it politely.


Would it really be preferable if we could say things happen for no reason? That sounds like chaos to me.


It would be preferable if we said things happen by random chance, as is the case. Reason is just a human attempt to apply justification to an event and form judgments. "Chaos" is one of those judgments.
ID: 1899302 · Report as offensive
Michael Watson

Send message
Joined: 7 Feb 08
Posts: 1383
Credit: 2,098,506
RAC: 5
Message 1899303 - Posted: 5 Nov 2017, 14:45:48 UTC - in response to Message 1899251.  


Scientists baffled: Universe shouldn't exist


Scientists will never figure out how The Universe Works.


Perhaps not, but they might figure out why it wasn't long ago destroyed by the mutual annihilation of matter and antimatter, as per the linked article. Antimatter might fall away from matter, instead of toward it, as ordinary matter does. That would keep the two apart, and prevent destruction. The possibility of antigravity antimatter is apparently to be tested. If it exists, this has some other interesting implications, besides saving the universe.
ID: 1899303 · Report as offensive
1 · 2 · 3 · 4 . . . 6 · Next

Message boards : Science (non-SETI) : The Universe


 
©2024 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.