How radiation affects you. Notice some doses are recorded as 'in a month' others 'per hour' (which would be multiplied by 24 hours in a day and then 30 days in a month) to compare. A total of 100 mSv is the recommended limit of exposure for 5 years.
Space exploration has been a dream for human beings for an eternity. To seek out new life and new civilizations--to boldly go where no one has gone before. I just wanna Star Trek it up; it would be so great, but I guess there's always the Alien/Pro