Originally Posted by sportingspecialist
I was floored when I discovered that stars are actually suns and the center of other galaxies.You could therefore,reasonably conclude there are millions of other planets.

In all of the universe,with these millions of planets,it would be quite arrogant to believe that humans are the only sentient beings who exist.


It's much more than that. It's estimated that each galaxy contains between 100 to 400 billion stars and one would presume that each of those stars has its own solar system,.. and the observable universe has 100 billion galaxies.

Earth's galaxy, the milky way, has 300 billion stars.

Here's a photo of just a few galaxies,..each containing hundreds of billions of stars and presumably hundred of billions of solar systems.

[Linked Image]