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Unanswered Questions

3 questions with no upvoted or accepted answers
33
votes
0answers
1k views

How soon can the first stars form?

Introduction In our universe, the cosmic microwave background was formed approximately 400,000 years after the Big Bang. It was hot, but within a few million years after the Big Bang, it would no ...
5
votes
1answer
112 views

Solar insolation/flux's effect on biome diversity/richness on an alien world

The Questions I'm trying to answer three main questions: Does a three-axis biome chart make sense for my world? How productive/life-rich should a biome be given a specific level of solar flux (...
3
votes
2answers
114 views

Body plan of a 4D human-analog?

I am attempting to design aliens that live in a universe with a 4+1 space-time--i.e., a universe with four orthogonal spatial dimensions, rather than three, in addition to a fifth time dimension. In ...