Is it possible for something to come from nothing?

[spidergoat]

Yes, the rate at which supernova occur in our galaxy. That's about 2 million times since it was formed.

[river]

Yes, the rate at which supernova occur in our galaxy. That's about 2 million times since it was formed.

and you , they , know this because

[spidergoat]

Read the link.

[AlexG]

Read the link.

That's asking a lot of him.

and you , they , know this because

because...

Our environment is composed of chemical elements formed long ago by nuclear fusion reactions in stellar interiors and supernovae. This process of ‘nucleosynthesis’ leads to the emission of gamma rays, which easily reach us from all regions of our galaxy. ESA’s Integral observatory has been measuring such gamma rays since October 2002.


Doppler shifts in gamma rays caused by galactic rotation
Roland Diehl and his colleagues were able to measure the Al 26 gamma-ray emissions along the plane of the inner galaxy.

However, because the disc of the galaxy rotates about its central axis, with the inner regions orbiting faster, gamma rays from decaying Al 26 observed from these regions should be moderated by the Doppler effect in a characteristic way. It is this characteristic pattern that has been found by Integral.

From this measurement, the team found that Al 26 decay gamma rays do indeed reach us from the inner regions of the galaxy, rather than from foreground regions along the same line of sight possibly caused by local and peculiar Al 26 production. These regions would not have the observed high relative velocity.

From these new observations, it is possible to estimate the total amount of radioactive Al 26 in our galaxy as is equivalent to three solar masses. This is a lot, given that Al 26 is an extremely rare isotope; the fraction estimated for the early Solar System is 5/100 000 of Al 26, in proportion to its stable aluminium isotope (Al 27).

[Grumpy]

river

what evidence

Comparison of Chandra X-ray and VLA Radio Images
The most recent (known) supernova in our Galaxy has been discovered by determining the age of the supernova remnant known as G1.9+0.3. To determine the age, astronomers tracked how quickly it is expanding, by comparing a radio image from 1985 to a Chandra image taken in 2007. The expansion rate was confirmed with another radio observation with the VLA in 2008. The difference in size between these images gives clear evidence for expansion, allowing the age of the remnant and the time since the original supernova explosion (about 140 years) to be estimated.

http://chandra.harvard.edu/photo/2008/g19/more.html

This is the youngest known supernova in our Galaxy. It was hidden in dark dustlanes near the core. Any such supernova on the other side of our galaxy are even harder to see, there are likely several others younger than this that have not yet been found(and our current equipment is capable of finding them). Our galaxy can be expected to have an average of three every 100 years.



This is an image of two groups of Red Supergiant Stars that are considered ticking time bombs(they too are much nearer to the core). Whether they start popping off in the next few years or 200 years from now, they will go fairly soon(in stellar terms).



And this is Eta Carina, it hasn't yet exploded(believe it or not)but it's getting steam up, so to say.

Grumpy

[Xotica]

so the picture of microwaves is local, NOT
Universal

Once again, you appear to have great difficulty wrapping your brain around the CMB scope/data. It doesn't get much simpler than this...

[Techne]

Imagine that you are at point at the cosmos where there are no stars, galaxies or any light sources at all. Because there are no light sources that you can see, all you can see around you is the color black or total darkness.

So do you think it is possible for something to originate out of this infinite blackness of space?

Logically speaking, you cannot get or have anything if there is nothing.

But if you bend the definition of nothingness in such a manner that it is actually something (e.g. empty space), then sure, you can get "something from nothing".

[river]

Once again, you appear to have great difficulty wrapping your brain around the CMB scope/data. It doesn't get much simpler than this...

and this proves what exactly ?

[Xotica]

and this proves what exactly ?

I have neither the time nor the inclination to tutor you on the CMB. Try this avenue which should be available at any public library system. John Mather was the project scientist for COBE.

The Very First Light: The True Inside Story Of The Scientific Journey Back To The Dawn Of The Universe
John Mather and John Boslough / Basic Books / 1998 / 352pp

[river]

I have neither the time nor the inclination to tutor you on the CMB. Try this avenue which should be available at any public library system. John Mather was the project scientist for COBE. The Very First Light: The True Inside Story Of The Scientific Journey Back To The Dawn Of The Universe John Mather and John Boslough / Basic Books / 1998 / 352pp

I have talked to people at NASA about a yr ago or so , and he told me they can only eliminate 4 to maybe 5 galaxies as being the source of the micro waves

inotherwords the only way your goin to get a true picture of CMB is to eliminate all galaxies in the Universe

so as I said the CMB picture is local

[AlexG]

Nonsense.

[river]

Nonsense.

NOT

it is true , phone them yourself

and if you do , ask them how many galaxies they can eliminate as the source of microwaves

[origin]

Talking to a janitor at NASA does not count as talking to NASA.

[AlexG]

The CMB is homogeneous across the entire universe. If galaxies were the source, it wouldn't be.

Nor would it's black body spectrum match exactly what the BB theory predicts it would be.

But it does.

Phone NASA? Who did you talk to, the public relations secretary? (If anyone).

[origin]

NOT

it is true , phone them yourself

and if you do , ask them how many galaxies they can eliminate as the source of microwaves

Don't need to ask them they have the source of the CMB all over their websites.

[Grumpy]

river

Cosmic Microwave Background is not local, it is of a different frequency and is too uniform to be of a discrete origin. And anyone who told you differently who works at NASA should be fired for gross incompetence.

Grumpy

[river]

Talking to a janitor at NASA does not count as talking to NASA.

silly

[river]

The CMB is homogeneous across the entire universe. If galaxies were the source, it wouldn't be.

details , details thats the key

what sources of CBM did they eliminate , 4 to 5 galaxies thats all

[river]

river

Cosmic Microwave Background is not local, it is of a different frequency and is too uniform to be of a discrete origin. And anyone who told you differently who works at NASA should be fired for gross incompetence.

Grumpy

they would know better than you

when I mean local I mean 4 to 5 galaxies at the most

[river]

Don't need to ask them they have the source of the CMB all over their websites.

sure but what they don't tell you is the sources of CMB that are NOT eliminated

thats the key