> We think our galaxy has 100 billion planets. That pool reduces quickly eliminating all planets without surface temperatures permitting liquid water, and of t

> We think our galaxy has 100 billion planets. That pool reduces quickly eliminating all planets without surface temperatures permitting liquid water, and of the right mass to permit something to grow. Among those, how many have a magnetosphere for billions of years, water, and the right amount of selenium to permit cell growth but not enough to poison everything? Consider also that the Sun may not even be from this galaxy. Maybe its galactic migration, the Milky Way cannibalizing its host possibly dwarf galaxy, had something to do with it. It makes our circumstances even rarer. I'm just playing Devil's Advocate here. Of course there's other life in the Universe, likely intelligent life. Infinite diversity in infinite combinations.