Calculating the age of the Universe at temperature 1 MeV
51361
How does the Hubble parameter change with the age of the universe?
85576
Calculating the probability of seeing a shooting star within half an hour if we know it for one hour
100760
How do we know that radioactive decay rates are constant over billions of years?
25938
Before the Big Bang
112264
Cosmological constant doubts
4942
What is the relationship between Cosmic Time and Scale Factor (or Redshift)?
68425
Electric charge neutrality of the Universe: evidences and theories
41812
Baryogenesis only at the Planck scale, or none at all?
43888
Age of universe?
98769
Find a universe and a predicate that satisfy the following formula
69667
What is the equation for the scale factor of the universe, a(t), for the best fit of data to the $\Lambda CDM$ Model of Cosmology?
114934
Bootstrap Paradox in Interstellar
14342
Solution of Friedmann equation in terms of conformal time
95197
Calculating the mass of a wormhole
41750
The age of the universe
129816
Experimental observation of matter/antimatter in the universe
42085
What is meant by the temperature of the CMB?