Before this blog gets too sappy with pictures of days past, here's something interesting about space travel.
Did you know that astronauts often see "white flashes" caused by super high speed particles passing through their heads?
Neither did I. It's from solar radiation and it could prevent a manned mission to Mars.
So basically there is this tiny particle, smaller than a speck of dust, that goes flying through space, and it passes right through your head, brain, everything! That is freaky.
Lucky for us here on Earth, the atmosphere and such protects us from these particles.
To tie this in to our recent God debate, a pro-God person might say, "lucky for us God made that barrier to protect us from solar radiation!"
But in truth, the barrier is a function of an atmosphere which happens to be a function of water vapor and so on. And in terms of evolution, we evolved to our current state based on our environment that is protected from radiation.
Had we evolved on a planet that was not protected from radiation, we could have ended up being something all together different.
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