UFO's and Aliens, the truth.

Message boards : SETI@home Science : UFO's and Aliens, the truth.
Message board moderation

To post messages, you must log in.

Previous · 1 · 2 · 3 · 4 · 5 · Next

AuthorMessage
John McCallum
Avatar

Send message
Joined: 5 Dec 04
Posts: 877
Credit: 599,458
RAC: 8
United Kingdom
Message 1034916 - Posted: 20 Sep 2010, 17:47:55 UTC - in response to Message 1034803.  
Last modified: 20 Sep 2010, 17:49:00 UTC

He had better get his skates on then only three shopping months to Xmas LOL
"Steven Greer is bringing things to a head,
in that if Obama does not come clean,
he and his cohort of witnesses will this year.

This could prove his authenticity one way or another,
saviour of mankind, or charlatan."
Old enough to know better(but)still young enough not to care
ID: 1034916 · Report as offensive
Rick

Send message
Joined: 7 Sep 99
Posts: 46
Credit: 271,541
RAC: 0
United States
Message 1034993 - Posted: 20 Sep 2010, 20:50:59 UTC - in response to Message 1034340.  

Donegal_TDI,
Honestly, there are many possibilities far into the future for people developing the science of anti-gravity, but its not going to happen with elements heavier than uranium(92) or plutonium(94).


Since we don't know how anti-gravity would work, it may be precisely the fact that an element is unstable that allows it... In other words, atomic instability may be a requirement for anti-gravity.

I don't believe in most of the "lore", btw, I think it was written as a troll either to make ufologists look foolish or just to create noise on the subject. Von Daniken must cringe when he hears these stories.
ID: 1034993 · Report as offensive
Profile William Rothamel
Avatar

Send message
Joined: 25 Oct 06
Posts: 3756
Credit: 1,999,735
RAC: 4
United States
Message 1035055 - Posted: 20 Sep 2010, 23:54:12 UTC - in response to Message 1034993.  

The expansion due to the force of the vacuum behaves as if it were anti-gravity.
ID: 1035055 · Report as offensive
Profile ML1
Volunteer moderator
Volunteer tester

Send message
Joined: 25 Nov 01
Posts: 20140
Credit: 7,508,002
RAC: 20
United Kingdom
Message 1035194 - Posted: 21 Sep 2010, 11:32:06 UTC - in response to Message 1035055.  
Last modified: 21 Sep 2010, 11:34:12 UTC

The expansion due to the force of the vacuum behaves as if it were anti-gravity.

What?!

That sounds just like a Von Daniken description...!


Note that it is the weight (mass x gravitational attraction = atmospheric positive pressure) that pushes for example mercury up an inverted evacuated tube.

The vacuum in the tube just provides an absence of a counteracting pressure. "Vacuum" doesn't have any "force" (unless you count zero-point energy...).


Shame on you for falling against that trap!

Keep searchin',
Martin
See new freedom: Mageia Linux
Take a look for yourself: Linux Format
The Future is what We all make IT (GPLv3)
ID: 1035194 · Report as offensive
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1035216 - Posted: 21 Sep 2010, 13:44:14 UTC - in response to Message 1035055.  
Last modified: 21 Sep 2010, 13:45:50 UTC

The expansion due to the force of the vacuum behaves as if it were anti-gravity.


The expansion of the universe is caused by dark energy which covers 74 percent of the universe.
rOZZ
Music
Pictures
ID: 1035216 · Report as offensive
Profile William Rothamel
Avatar

Send message
Joined: 25 Oct 06
Posts: 3756
Credit: 1,999,735
RAC: 4
United States
Message 1035341 - Posted: 23 Sep 2010, 20:13:16 UTC - in response to Message 1035194.  

Try creating a vacuum without using energy.
ID: 1035341 · Report as offensive
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1035351 - Posted: 23 Sep 2010, 20:42:19 UTC - in response to Message 1035341.  

Try creating a vacuum without using energy.


On earth, energy is needed to create a vacuum. The vacuum, was there from, the very first moment...Which energy created it then...stays a mystery to us I guess...
rOZZ
Music
Pictures
ID: 1035351 · Report as offensive
Profile Gary Charpentier Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 25 Dec 00
Posts: 30608
Credit: 53,134,872
RAC: 32
United States
Message 1035368 - Posted: 23 Sep 2010, 21:36:46 UTC - in response to Message 1035341.  

Try creating a vacuum without using energy.

I believe you mean try and maintain a vacuum without using energy.

ID: 1035368 · Report as offensive
Profile William Rothamel
Avatar

Send message
Joined: 25 Oct 06
Posts: 3756
Credit: 1,999,735
RAC: 4
United States
Message 1035447 - Posted: 24 Sep 2010, 3:21:00 UTC - in response to Message 1035368.  

Nope. A thermos bottle does just fine.

ID: 1035447 · Report as offensive
Profile Gary Charpentier Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 25 Dec 00
Posts: 30608
Credit: 53,134,872
RAC: 32
United States
Message 1035449 - Posted: 24 Sep 2010, 3:33:09 UTC - in response to Message 1035447.  

Nope. A thermos bottle does just fine.

Not nearly a vacuum.

http://en.wikipedia.org/wiki/Vacuum_energy

ID: 1035449 · Report as offensive
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1035533 - Posted: 24 Sep 2010, 10:12:44 UTC

Creating is an action for which energy is needed.
I think you can find this back in one of Newtons laws
rOZZ
Music
Pictures
ID: 1035533 · Report as offensive
Profile William Rothamel
Avatar

Send message
Joined: 25 Oct 06
Posts: 3756
Credit: 1,999,735
RAC: 4
United States
Message 1035538 - Posted: 24 Sep 2010, 11:14:07 UTC
Last modified: 24 Sep 2010, 11:16:40 UTC

Yes. There is apparent energy in a vacuum which ostensibly causes the Universe to expand --or so we would model what we see or think that we see.

But: calculations trying to explain this from accepted principles differ by 120 or so orders of magnitude compared to what we observe. This suggests that we don't know what is really going on. Expansion of the cosmos could be due to something that is or looks like "Negative Gravity". Perhaps there is another universe in one of our 11 dimensional branes that is attracting us through plain old gravity but we can't see it since we are three dimensional creatures.

The big question to me is: what is the mechanism that creates new space and new vacuum and new vacuum energy and how does it work and why.

Seems that we have strayed from the original topic--all the way from nonsense to wondering about cosmological physics.
ID: 1035538 · Report as offensive
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1035544 - Posted: 24 Sep 2010, 11:51:59 UTC - in response to Message 1035538.  


The big question to me is: what is the mechanism that creates new space and new vacuum and new vacuum energy and how does it work and why.


Dark energy is one of sciences biggest mysteries. Nobody knows how it got there, how it works, why it makes the universe expand and why there is so much of it.
rOZZ
Music
Pictures
ID: 1035544 · Report as offensive
Profile Gary Charpentier Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 25 Dec 00
Posts: 30608
Credit: 53,134,872
RAC: 32
United States
Message 1035631 - Posted: 24 Sep 2010, 15:25:09 UTC - in response to Message 1035544.  
Last modified: 24 Sep 2010, 15:25:22 UTC


The big question to me is: what is the mechanism that creates new space and new vacuum and new vacuum energy and how does it work and why.


Dark energy is one of sciences biggest mysteries. Nobody knows how it got there, how it works, why it makes the universe expand and why there is so much of it.

Everyone knows it is the residue of warp engines, their global warming.
ID: 1035631 · Report as offensive
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1035657 - Posted: 24 Sep 2010, 16:16:53 UTC - in response to Message 1035631.  


Everyone knows it is the residue of warp engines, their global warming.


You have to explain this to me Gary because I don't know what the h*** you're talking about!
rOZZ
Music
Pictures
ID: 1035657 · Report as offensive
Profile Allie in Vancouver
Volunteer tester
Avatar

Send message
Joined: 16 Mar 07
Posts: 3949
Credit: 1,604,668
RAC: 0
Canada
Message 1035976 - Posted: 25 Sep 2010, 8:41:07 UTC - in response to Message 1035544.  
Last modified: 25 Sep 2010, 8:43:08 UTC


The big question to me is: what is the mechanism that creates new space and new vacuum and new vacuum energy and how does it work and why.


Dark energy is one of sciences biggest mysteries. Nobody knows how it got there, how it works, why it makes the universe expand and why there is so much of it.


I am not even convinced that dark energy (or even dark matter) actually exists. Both are somewhat ad-hoc inventions to fill holes in the main cosmological theories.

It is rather like the aether of old. A hundred years ago it was believed that light was a wave and a wave would need something to travel through, so it was postulated that empty space was filled with some mysterious substance called aether through which the waves could travel.

Then along came quantum theories and scientists realized that light was not a wave, but could act like a wave or it could act like a particle. With this new, deeper understanding of underlying principles, the concept of 'aether' was no longer required.

I think that it will be the same with dark energy. Someday, some bright mind will come along, will take a massive leap of imagination and suddenly we will all be slapping our foreheads and saying "So simple. Why didn't I think of that."
Pure mathematics is, in its way, the poetry of logical ideas.

Albert Einstein
ID: 1035976 · Report as offensive
Profile William Rothamel
Avatar

Send message
Joined: 25 Oct 06
Posts: 3756
Credit: 1,999,735
RAC: 4
United States
Message 1036025 - Posted: 25 Sep 2010, 11:04:53 UTC - in response to Message 1035976.  
Last modified: 25 Sep 2010, 11:06:34 UTC

Unless there is an alternate explanation for the doppler shift we see in the light from far-distant galaxies, the universe is expanding at an accelerating pace. This requires the energy to overcome gravity PLUS the energy to accelerate an extraordinarily large mass.

Where it is and what it is and what's causing it are the questions. Another possibility which has been discredited is that light loses energy as it travels over enormous distances and therefore shifts frequency. In this case the apparent doppler shift would not be caused by a moving source. As I said this theory due to the irascible Fritz Zwickey has been generally shown to be wrong by what the COBE sky survey shows about the temperature of the universe and it's relative homogeneaity.
ID: 1036025 · Report as offensive
Profile Gary Charpentier Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 25 Dec 00
Posts: 30608
Credit: 53,134,872
RAC: 32
United States
Message 1036243 - Posted: 25 Sep 2010, 19:41:59 UTC - in response to Message 1035657.  


Everyone knows it is the residue of warp engines, their global warming.


You have to explain this to me Gary because I don't know what the h*** you're talking about!

In one stardrek episode I seem to remember a comment about one area of space being unstable due to the overuse of warp engines and some side effect thereof. Can't remember more details, but I'm sure someone else can fill it in. I think in the future some change was made to the engines so that this pollution was mitigated. So I say their technology's global warming is dark energy.

ID: 1036243 · Report as offensive
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1036246 - Posted: 25 Sep 2010, 19:47:28 UTC - in response to Message 1036243.  


Everyone knows it is the residue of warp engines, their global warming.


You have to explain this to me Gary because I don't know what the h*** you're talking about!

In one stardrek episode I seem to remember a comment about one area of space being unstable due to the overuse of warp engines and some side effect thereof. Can't remember more details, but I'm sure someone else can fill it in. I think in the future some change was made to the engines so that this pollution was mitigated. So I say their technology's global warming is dark energy.


Ok. Thanx Gary :)
rOZZ
Music
Pictures
ID: 1036246 · Report as offensive
Profile Julie
Volunteer moderator
Volunteer tester
Avatar

Send message
Joined: 28 Oct 09
Posts: 34041
Credit: 18,883,157
RAC: 18
Belgium
Message 1036256 - Posted: 25 Sep 2010, 20:23:24 UTC - in response to Message 1035976.  
Last modified: 25 Sep 2010, 20:24:08 UTC


The big question to me is: what is the mechanism that creates new space and new vacuum and new vacuum energy and how does it work and why.


Dark energy is one of sciences biggest mysteries. Nobody knows how it got there, how it works, why it makes the universe expand and why there is so much of it.


I am not even convinced that dark energy (or even dark matter) actually exists. Both are somewhat ad-hoc inventions to fill holes in the main cosmological theories.

It is rather like the aether of old. A hundred years ago it was believed that light was a wave and a wave would need something to travel through, so it was postulated that empty space was filled with some mysterious substance called aether through which the waves could travel.


Then along came quantum theories and scientists realized that light was not a wave, but could act like a wave or it could act like a particle. With this new, deeper understanding of underlying principles, the concept of 'aether' was no longer required.

I think that it will be the same with dark energy. Someday, some bright mind will come along, will take a massive leap of imagination and suddenly we will all be slapping our foreheads and saying "So simple. Why didn't I think of that."


Accurate analyses of WMAP in march 2003 proved the existence of dark energy. Cosmologists still can't explain the how and why. They think it is the energy of the vacüum itself, the so called zero point energy.
Bumps in the cosmic microwave background also speak of dark energy.
WMAP sees the effect of dark energy on the energy of microwave photons at various temperatures and angular scales. In other words, the WMAP detects propreties in the microwave light under the influence of dark energy.
rOZZ
Music
Pictures
ID: 1036256 · Report as offensive
Previous · 1 · 2 · 3 · 4 · 5 · Next

Message boards : SETI@home Science : UFO's and Aliens, the truth.


 
©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.