Will cosmic microwave background disappear?

In summary, the standard cosmological model predicts that as time approaches infinity, the temperature of the universe will approach absolute zero. This is known as "heat death" and would result in the disappearance of microwave background and the end of cosmology. The evidence of the Hubble expansion, vacuum energy, and the Big Bang will no longer be detectable, leading to a return to a static universe. This idea is further explored in an essay by Lawrence M. Krauss and Robert J. Scherrer, who argue that future observers will be unable to determine the true nature of the universe.
  • #1
maris205
3
0
According to the standard cosmological model, the description for cosmic temperature falls is:T=A*t^-0.5. So when t-->infinite, T-->0.

It means the temperature of microwave background will approach 0k after billions of years.

Microwave background will disappear?:confused:
 
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  • #2
Yep.
Despite the term "heat death", the temperature of the entire universe would be very close to absolute zero in this scenario. Heat death is however not quite the same as "cold death" or the "Big Freeze" in which the universe simply becomes too cold to sustain life due to continued expansion, though the result is quite similar.[6]
http://en.wikipedia.org/wiki/Heat_death
 
  • #3
I agree with Russ Watters "Yep" pronouncement
here's a beautifully written article about that and other far-future conditions
by a firstrate cosmologist

http://arxiv.org/abs/0704.0221
The Return of a Static Universe and the End of Cosmology
Lawrence M. Krauss (1,2), Robert J. Scherrer (2) ((1) Case Western Reserve University, (2) Vanderbilt University)
to appear, GRG October 2007
(Submitted on 2 Apr 2007 (v1), last revised 27 Jun 2007 (this version, v3))

"We demonstrate that as we extrapolate the current LambdaCDM universe forward in time, all evidence of the Hubble expansion will disappear, so that observers in our 'island universe' will be fundamentally incapable of determining the true nature of the universe, including the existence of the highly dominant vacuum energy, the existence of the CMB, and the primordial origin of light elements. With these pillars of the modern Big Bang gone, this epoch will mark the end of cosmology and the return of a static universe. In this sense, the coordinate system appropriate for future observers will perhaps fittingly resemble the static coordinate system in which the de Sitter universe was first presented."

(5th prize 2007 Gravity Research Foundation Essay)
 

1. What is cosmic microwave background (CMB)?

Cosmic microwave background is a type of electromagnetic radiation that is present throughout the universe and is a remnant of the Big Bang. It is the oldest light in the universe, dating back to about 380,000 years after the Big Bang.

2. Will cosmic microwave background ever disappear completely?

No, cosmic microwave background will not disappear completely. It will continue to exist as long as the universe exists. However, it will become increasingly faint over time as the universe expands and the wavelength of the CMB gets stretched out.

3. How is cosmic microwave background detected?

Cosmic microwave background is detected using specialized instruments, such as telescopes and satellites, that are designed to detect microwave radiation. The CMB can also be detected through its effects on the cosmic microwave background radiation.

4. What can cosmic microwave background tell us about the universe?

Cosmic microwave background is an important tool for studying the structure and evolution of the universe. It can provide insights into the early universe, the formation and distribution of galaxies, and the overall composition of the universe.

5. Are there any current or future missions dedicated to studying cosmic microwave background?

Yes, there are several current and future missions focused on studying cosmic microwave background. Some examples include the Planck satellite, the Atacama Cosmology Telescope, and the Simons Observatory. These missions aim to gather more detailed data and insights about the CMB and its role in the history of the universe.

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