I've never heard of any theories that earth like conditions are new or unique, in fact half of all stars like ours are over 9 billion years old. And the universe has almost stopped making new stars.
If you believe it takes, on average 9 billion years X 100 billion star systems to create 1 civilization, then you believe in some kind of 'filter' that stops life almost completely. A filter that we have passed to be the first.
And by the time any other life statistically emerges we will have colonized the galaxy many times over.
If you believe it takes, on average 9 billion years X 100 billion star systems to create 1 civilization, then you believe in some kind of 'filter' that stops life almost completely. A filter that we have passed to be the first.
And by the time any other life statistically emerges we will have colonized the galaxy many times over.