Last week, watching the news about discovery and the ISS a thought came to my mind.
Here at Earth we are protected from high energy radiations from outer space. Earth's atmosphere is the shield that filters most of these radiations. One of most familiar radiation is the ultraviolet. Without the atmosphere we will be burnt in a moment.
When we imagine intelligent live in other worlds we tend to think some creatures as humans, with a head, two arms and two legs. That is nearly impossible. In the same way some centuries ago humans used to think the Earth was the center of Universe nowadays we think about life outside Earth as humans or something similar.
We know so little of our world and even less of the space that we can not even imagine life outside and we simply represent it as human-like beings.
We are fools...