Is there any method to know the real age of the universe?
41750
The age of the universe
4132
What is the closest general-relativistic equivalent of a "time slice"?
142837
How to get the US population for every year Wolfram has data on?
137365
Calculate age with decimals from date of birth
54501
What is the entropy of the universe today?
95295
Is the Universe Past-Eternal?
104255
Can we know the fundamental nature of space and time?
62168
Hubble time, the age of the Universe and expansion rate
25373
How do we know that some radioactive materials have a half life of millions or even billions of years?
92978
Distance from redshift
152937
Which observer's time is proper time?
1876
Is the sensitivity of the LIGO sensitive enough to measure the "expansion of the universe"? What specifically is the numerical ratio of effects?
130124
Is it possible to learn about an event that occurred outside of your observable universe?
39778
Star Wars Time Measurement and Dating Systems
115517
How could we know that the relativistic curvature of universe is intrinsic?
74958
Dark age of universe when all fusion process ceases?
148838
Is the total mass of the universe constant in time?