4 ms·
I think this timeline tells a different story: Intelligent life is very rare. Typically, life doesn't evolve beyond single-celled or primitive multi-celled orga
by AngryParsley 16y ago
I think this timeline tells a different story: Intelligent life is very rare. Typically, life doesn't evolve beyond single-celled or primitive multi-celled organisms before the star goes red giant.
The chances of general intelligence evolving are so small that we're probably the first.
- deleted 16y ago[deleted]
- deleted 16y ago[deleted]
- AngryParsley 16y agoUmm... no? Life on Earth started about 4 billion years ago. The universe is about 13 billion years old. Also, earlier stars had lower metallicity, which made it less likely for rocky planets to form. Population I stars (like the sun) are probably the first generation of stars with high enough metallicity to make rocky planets and life likely.