Why living in space may require more than new technology
We see it in science fiction movies all the time:
The human body was built for life on Earth. Put us into space under microgravity and it reacts in unpleasant ways.
As they soar into space, many astronauts experience nausea and even vomiting — not exactly a stellar start. When they return, they can experience blurred vision, headaches, muscle atrophy, weak bones and possibly even lung cancer from galactic cosmic radiation — the equivalent of 10 chest X-rays a day.