All Questions
4 questions
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Total number of particles in the universe (according to Planck Surveyor measures, 2018)
Recently, Marco Ajello et al. (2018) has estimated the total number of photons in the whole observable universe as:
$$N_\gamma \approx 4\cdot 10^{84}.$$
On the other hand, the ratio of baryons to ...
- 1,670
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What if there was no baryon-antibaryon asymmetry in our universe?
We know that the universe goes through different evolutionary phases: radiation, matter and later dark energy epoch.
What would happen if there was no baryon-antibaryon asymmetry? How would the ...
- 87
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Could matter and antimatter have drifted away early after Big Bang?
Early after Big Bang, could small parts of matter and antimatter have drifted away in opposite directions and thus still be able to maintain anti/matter balance, but keep local isolated pockets that ...
1
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How do trace element abundances show that dark matter exists in both baryonic and non - baryonic forms?
I can't seem to find an answer to this question anywhere, any help would be greatly appreciated.
Thanks in advance.
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