The tag has no wiki summary.

learn more… | top users | synonyms

5
votes
1answer
77 views

Might the universe be really small yet seem infinite from spherical reflections?

if a single source of light quite small, was placed somewhere inside a completely reflective sphere, quite large, what would the reflections look like from the light source's point of view within that ...
10
votes
5answers
293 views

Do we know the exact spot where big bang took place?

If you rewind the universe back 14,7 billion years, all matter were in one spot, and then started expanding. Do we know where this is in reference to our own solar system? And is there anything there? ...
10
votes
5answers
197 views

What is in the center of the universe?

If the universe has formed & originated by a Big Bang Explosion, then there must be empty space left in the center of the explosion site, as all the matter is travelling at tremendous speeds away ...
3
votes
1answer
74 views

Is there another explanation, apart from the doppler effect, for the redshift observed in distant galaxies?

On episode 10 of the original Cosmos TV series, Carl Sagan mentions that some scientist don't agree that the redshift observed in distant galaxies is evidence of the big bang, stating that probably ...
0
votes
1answer
98 views

The reason behind Big Bang

It always amuse us to research about things around us and we always start our research with a question that - what must be the reason for happening of that phenomenon? As we know that the formation ...
2
votes
1answer
51 views

if the big bang only expanded the universe when and how did it originate? [duplicate]

If the big bang expanded the universe from a singularity point, that means that there was matter before, so where and how did matter form for the first time if it's even possible to know such a thing? ...
2
votes
1answer
59 views

In what form was the space at singularity?

It is somewhat imaginable for all the matter or energy to be condensed in sub-atomic size. But what about space? The space is neither 'matter' nor 'Energy'. If there were no space at singularity ...
1
vote
2answers
138 views

Observable Universe: why distant galaxies not visible?

Assuming that the Universe is and has been expanding ever since its creation (BBT), the galaxies that are now at the 'edge' (not visible theoretically) must have been (at some point in time) at place ...
3
votes
3answers
74 views

Did big bang happen only one time or it might happen again somewhere million time away from our observable universe?

We know, everything is in existence due to big bang from singularity. Time also started from that big bang point. So, did big bang happen only once or it might happen again somewhere million time ...
1
vote
1answer
108 views

How Far Are We From the Edge of the Universe? [duplicate]

Following the Big Bang the Universe continues to expand, presumably and roughly equally in all directions. It is understood that the Big Bang occurred 13.798 ± 0.037 billion years ago. Is there ...
5
votes
4answers
83 views

Can it be inferred that our cosmological horizon has increased over time?

If I am right, we can see only those stars that lie within our cosmological horizon, and there may or may not be any stars beyond that. Given last 150 years of using telescopes, and since then our ...
14
votes
1answer
93 views

Why is there a matter/anti-matter asymmetry in the universe?

After the big bang occurred what biased the formation of particles over anti-particles? Why are particles more common than anti-particles?