4 ms·
In summary: The universe is very young and we might be one of the first type >= 0 civilizations.
by 3rd3 12y ago
In summary: The universe is very young and we might be one of the first type >= 0 civilizations.
- dnautics 12y agoAccording to contemporary cosmological estimates, the earth has been around for the latter 1/3 of the universe's age. Even given that life-bearing planets must be at least second generation stars, and conservatively saying that it should take about as long as earth is around for the first generation to go (not true) the universe is already fairly old. Interestingly, life evolved on earth in the first billion years. That's incredibly fast. Arguably, life is inevitable whereas intelligent life might not be so. Multicellularity didn't come about till the most recent billion...