The University of California found that exposure to highly energetic charged particles – much like those found in the galactic cosmic rays – can cause significant damage to the central nervous system, resulting in brain impairments, according to reports today.

The University of California found that exposure to highly energetic charged particles – much like those found in the galactic cosmic rays – can cause significant damage to the central nervous system, resulting in brain impairments, according to reports today.

This has big ramifications.. it could prevent us from going to Mars. But.  Maybe we should send androids there first. Humanoids to test the waters and see what things are like. Eventually when we merge man with machine we can join the robots who by then will have a beautiful garden with a terrace overlooking the planet Earth built for our arrival.
A human can dream.
Nonetheless. The article worth reading here:
http://www.telegraph.co.uk/news/science/space/11576788/Mars-astronauts-could-develop-dementia-on-journey-to-Red-Planet.html