I was just reading a couple of articles which, in fact, probably have nothing to do with each other but, in my mind are linked. First, there was that old thing about how life began on Mars and then dropped into Earth on a meteorite. They trot that out every now and again. It’s a popular theory. It reminds me, a bit, of people who say that Shakespeare couldn’t have written all of his own plays because they are so brilliant that they must have been written by somebody else.
Life on Earth is pretty amazing, and whether it originated in a shallow, saline pool by an eerily empty Pangaean coastline, or whether it was a bacteria dropped down from the sky, is a minor point. Interesting, but doesn’t really make a difference.
Then, the other day, scientists discovered that there are rogue planets, traveling throughout the galaxy on their own and not in the orbit of any sun. That is so incredibly bizarre that it brought to mind a theory I have had for a long time: The universe is so vast that anything that can possibly physically exist must exist somewhere, and probably in multiple places.
So, there are planets with more than one sun, there are solar systems with hundreds of planets, there are worlds where dinosaurs evolved intelligence, there are asteroids and comets which have life, and maybe some of those billions of rogue planets are actually planet sized interstellar craft built by incredibly advanced civilizations.
There are, undoubtedly, many
Planets without suns//Planets floating free//Here and there and everywhere//Throughout the Galaxy
solar systems where life has jumped from one planet to another and countless planets throughout the universe where life has originated independently.
It’s pretty awesome either way.
www.gurukalehuru.com 
We stop at one universe?
“If the universe is expanding because of some primordial explosion, and if this expansion will ultimately reach its end – well, then won’t the universe begin to contract. All the matter that went hurtling through space after the Big Bang will, at the bequest of gravity, come crashing back into itself until it reaches such a density that another Big Bang is the result.”
http://thetalkingpig.blogspot.com/2008/06/i-know-jack.html
Why?
The thing is, it’s not only beyond our understanding, it’s beyond our ABILITY to understand. The human brain, miraculous as it is, has to be small enough to fit inside the human skull. That is like a tiny little peanut in a shell. The universe is vast and infinitely complex. The universe contains our minds. Our minds can’t possibly contain the universe.
I have to disagree, here. We don’t know everything – yet. As much as I dislike “mankind,” for all of the shitty things we do to each other, I’m impressed at our ability to understand – some of us, anyway, though definitely not me, in particular- the fundamental makeup of our environment, the cosmos, sub-atomic particles, gravity, etc. I believe it’s only a matter of time before we unlock the secrets of Existence. It may not be a “good thing” when we do – look at how we used fusion – but we will discover the answers at some point. We won’t stop until we do – or until we’re all dead. That much is certain.
hope you’re right