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> When considering the Universe as a whole, the safest environments for life (similar to the one on Earth) are the lowest density regions in the outskirts of la
by Florin_Andrei 12y ago
> When considering the Universe as a whole, the safest environments for life (similar to the one on Earth) are the lowest density regions in the outskirts of large galaxies and life can exist in only ~ 10% of galaxies. Remarkably, a cosmological constant is essential for such systems to exist.
Wow. That's an interesting side-effect.
- dkural 12y agoIf you are referring to the cosmological constant, not really: You still need rest of physical laws & constants for life to exist. Changes in the others could compensate for changes in the cosmological constant (for instance, strength of gravity).
- Florin_Andrei 12y agoI just thought it seemed a bit arbitrary to link the existence of life on that seemingly-unrelated constant. I'm aware of all the rest of the "fine-tuning" (please mind the quotes, yadda-yadda).