- #1
Stephanus
- 1,316
- 104
Dear PF Forum,
Thanks for helping me so far.
Lately, I've been reading Universe from nothing and quantum fluctuation.
Those are very interesting topics. And I'd like to know more about them.
And how the energy of the universe is zero.
But before I would study them, there are things that intrigue me.
I've been reading this.
Of course the CMB.
1. Can the nuclear reaction from the stars contribute to this temperature?
2. A and B seem contradict each other. And I've got warnings by some staffs regarding posting from unreliable links. And I don't think those links are unreliable.
I've read those links a couple of times, but I still can't find the answer.
Why is that? Is the temperature in intergalactic space is hot, while the temperatur within a galaxy, in interstellar medium is cold?
And about this paragraph, still in the wiki link.
Thank you very much for your help
Sincerely
Thanks for helping me so far.
Lately, I've been reading Universe from nothing and quantum fluctuation.
Those are very interesting topics. And I'd like to know more about them.
And how the energy of the universe is zero.
But before I would study them, there are things that intrigue me.
I've been reading this.
Actucally I know about it from this: How far can ge go - The limit of humanity https://www.youtube.com/watch?v=ZL4yYHdDSWsA:
https://en.wikipedia.org/wiki/Warm–hot_intergalactic_medium
The warm–hot intergalactic medium (WHIM) refers to a sparse, warm-to-hot (105 to 107 K) plasma that cosmologists believe to exist in the spaces between galaxies and...
I thought in vacuum, the temperature is always zero. What causes this 2.7 Kelvin temperature?B:
http://www.universetoday.com/77070/how-cold-is-space/
And if you travel out far away from everything in the Universe, you can never get lower than a minimum of just 2.7 Kelvin or -270.45 Celsius.
This is the temperature of the cosmic microwave background radiation, which permeates the entire Universe.
Of course the CMB.
1. Can the nuclear reaction from the stars contribute to this temperature?
2. A and B seem contradict each other. And I've got warnings by some staffs regarding posting from unreliable links. And I don't think those links are unreliable.
Why is that? Is the temperature in intergalactic space is hot, while the temperatur within a galaxy, in interstellar medium is cold?
And about this paragraph, still in the wiki link.
I think the SMBH is inside the galaxy. Isn't the gas shocks are created within the galaxy not in a location thousands of light years away?Within the WHIM, gas shocks are created as a result of active galactic nuclei, along with the gravitationally-driven processes of merging and accretion...
Thank you very much for your help
Sincerely