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Q&A Rigorous Science Meta
Rigorous Science
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Rigorous Science Cosmic Background Radiation in the past

I have a story where a species of the very first (literally first) carbon-based humanoid life (surprise!) that happen to emerge roughly seven billion years ago (their home system were formed twelve...

2 answers  ·  posted 9y ago by Hendrik Lie‭  ·  last activity 6y ago by Hendrik Lie‭

Question physics universe