All Questions
10 questions
1
vote
3
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893
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Is our universe flat?
I heard our universe is flat. Then one question is puzzling in my mind. If our universe is really flat, why we measure distance from any point across in a spherical way. In other words, why we say, ...
3
votes
2
answers
244
views
Is it be correct to say that we live in a young (only 14 billion years old) universe?
From what I have read, it seems that our universe is expected to function more or less as it does now for some $10^{12}$ years, possibly more. If that is correct, our universe's current age of $14$ ...
- 15.7k
7
votes
2
answers
779
views
How do we measure the age of the universe?
As mentioned in wiki/Age_of_the_universe,
The current measurement of the age of the universe is around 13.8 billion years (as of 2015) – 13.799±0.021 billion years
When my friend who is not from ...
- 10.4k
8
votes
2
answers
2k
views
Is the age of the universe relative to an observer's location in that universe?
According to Wiki the age of the universe is 13 billion years old, and I was taught that background radiation made the universe uniform in all directions.
Doesn't this define a sphere of space in the ...
3
votes
1
answer
210
views
Could the Universe really be 12.5-13 billion years old?
My initial reaction is that "this must be wrong" and apparently that's a lot of people's initial reaction according to the article.
https://www.nbcnews.com/mach/science/universe-may-be-billion-years-...
- 1,393
2
votes
0
answers
183
views
How to derive the equation for the age of a flat universe with a positive cosmological term?
Can anyone show the steps involved in deriving this equation from the friedmann equation with the cosmological constant involved
- 61
4
votes
1
answer
706
views
Use of type-I a supernovae as standard candle
Why only type -Ia supernovae are used as standard candle to calculate age of universe and why not type II, type Ib, type 1c ?
CommunityBot
- 1
4
votes
2
answers
3k
views
Does the age of the universe take into account General Relativity / Special Relativity?
It is generally accepted that the age of the universe is approximately 12-15 billion years old based on the speed of the expansion of the universe. Since everything is moving very fast away from us, ...
4
votes
1
answer
293
views
Where are we in an approximate timeline of the possibly habitable universe?
Our universe is supposedly 13+ billion years old and our Sun is a third generation star. It seems to me that we are now in a relatively young stage of the universe. How many generations of stars will ...
CommunityBot
- 1
0
votes
2
answers
235
views
Could we estimate the age of the universe based on the planar property of the Solar System?
The Big Bang scattered planets and stars everywhere in three dimensions.
But after billion years of moving and interacting with each others through gravity, planets moved on the same plane.
Given ...
CommunityBot
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