Fred J McCall wrote:
Rob wrote:

wrote:
"Astronauts flying to Mars are in danger of long-term brain damage and dementia
from the onslaught of radiation in galactic cosmic rays, according to a new
study.

The paper, published today in Nature's Scientific Reports, raises alarm for
NASA’s future plans in long-term space travel."


Aren't people who stay on earth in the same danger?
There are lots of things that can cause this, including posting on usenet
newsgroups, reading too many studies, or even just living.


The Earth's magnetic field shields most of that away from us (which is
why we have Van Allen belts around the planet). Go beyond the Van
Allens and you are outside that protection.

But brain damage and dementia can result from the above causes as well.