How Far Can We Explore Beyond the Mysterious Space Blob 'Himiko'?

  • Thread starter Thread starter wolram
  • Start date Start date
  • Tags Tags
    Space
AI Thread Summary
The discussion centers on the exploration limits beyond the cosmic structure known as 'Himiko' and the implications for the age of the universe. Participants question the feasibility of extending our exploration without altering current understandings of cosmic timelines. The conversation highlights the need for advanced technology to probe deeper into space. Concerns are raised about the potential need to redefine cosmic age parameters based on new discoveries. Ultimately, the dialogue emphasizes the importance of ongoing research in understanding the universe's vastness.
Space news on Phys.org
wolram said:
How much further can we go past the blob until the age of the U has to be extended?
Uh, why would you expect that it will happen that way?
 

Thread 'Matter density right after the decoupling'

https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
View full post »

Thread 'Rutgers finds a transparent Einstein Cross - apparently a dark matter "halo".'

The formal paper is here. The Rutgers University news has published a story about an image being closely examined at their New Brunswick campus. Here is an excerpt: Computer modeling of the gravitational lens by Keeton and Eid showed that the four visible foreground galaxies causing the gravitational bending couldn’t explain the details of the five-image pattern. Only with the addition of a large, invisible mass, in this case, a dark matter halo, could the model match the observations...
View full post »

Thread 'Big Bang and Infinite Universe'

Hi, I’m pretty new to cosmology and I’m trying to get my head around the Big Bang and the potential infinite extent of the universe as a whole. There’s lots of misleading info out there but this forum and a few others have helped me and I just wanted to check I have the right idea. The Big Bang was the creation of space and time. At this instant t=0 space was infinite in size but the scale factor was zero. I’m picturing it (hopefully correctly) like an excel spreadsheet with infinite...
View full post »

Similar threads

Lyman-Alpha Blobs emit very specific UV light
Replies
3
Views
2K
I How far into the Universe can we theoretically reach?
Replies
34
Views
4K
B Clarification on how old the Universe is
Replies
11
Views
3K
I Why is the observed local region of space flat?
Replies
25
Views
3K
I Does space have its own density?
Replies
1
Views
2K
B How do the candidates for Dark Energy 'work'?
Replies
4
Views
2K
I How do we know age of the universe?
Replies
14
Views
3K
I How does the expansion of space affect the age of the universe?
Replies
25
Views
5K
I Is this explanation of "space itself expanding" correct?
Replies
27
Views
4K
A What volume of interstellar space is needed to form a star?
Replies
7
Views
3K

Hot Threads

Recent Insights

Back
Top