What will the universe *look* like in 15 billion years from now ?

  • Thread starter Thread starter Nikarasu M
  • Start date Start date
  • Tags Tags
    Universe Years
AI Thread Summary
In 15 billion years, the universe is expected to undergo significant changes, leading to a scenario where evidence of the Hubble expansion will vanish. Observers in the future "island universe" will struggle to determine fundamental aspects of the cosmos, including the nature of vacuum energy and the cosmic microwave background (CMB). A paper by Lawrence Krauss and Robert Scherrer discusses how this will effectively mark the end of cosmology, reverting to a static universe model. The loss of key cosmological evidence will hinder understanding of the universe's origins and evolution. This transformation highlights the limitations of future observations in grasping the universe's true nature.
Nikarasu M
Messages
17
Reaction score
0
oops

thread here:

https://www.physicsforums.com/showthread.php?t=400913
 
Last edited:
Astronomy news on Phys.org
https://www.physicsforums.com/showthread.php?t=400913
 
Last edited:
sorry mods - wrong forum ...

please delete
 
This is not the perfect paper but it can help.
http://arxiv.org/abs/0704.0221

It is about what it will be like to study cosmology at some time far in the future. What will happen to the stars and galaxies that we observe now, to learn about the universe? What will happen to the CMB, the cosmic microwave background, which now we can observe and learn things from?

This paper is by a famous cosmologist named Lawrence Krauss.
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)
(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.
Comments: 5th prize 2007 Gravity Research Foundation Essay Competition,
 
Publication: Redox-driven mineral and organic associations in Jezero Crater, Mars Article: NASA Says Mars Rover Discovered Potential Biosignature Last Year Press conference The ~100 authors don't find a good way this could have formed without life, but also can't rule it out. Now that they have shared their findings with the larger community someone else might find an explanation - or maybe it was actually made by life.
TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
Thread 'Could gamma-ray bursts have an intragalactic origin?'
This is indirectly evidenced by a map of the distribution of gamma-ray bursts in the night sky, made in the form of an elongated globe. And also the weakening of gamma radiation by the disk and the center of the Milky Way, which leads to anisotropy in the possibilities of observing gamma-ray bursts. My line of reasoning is as follows: 1. Gamma radiation should be absorbed to some extent by dust and other components of the interstellar medium. As a result, with an extragalactic origin, fewer...
Back
Top