Alien Atoms: First Contact Made By NASA Satellite
Updated: 2012-01-31 18:47:54
Using the Interstellar Boundary Explorer (IBEX), NASA has sampled the galactic wind that has traveled from outside our solar system. Four types of atoms were found to be different from what we have in our Solar System.

On the Planetary Society web site: Thirty Percent for Science: Planetary Society Calls for Increased Investment for the Future
Clearly carrying heavy shielding to protect astronauts from radiation in space is expensive. If you havent' been reading my space radiation series as I've been posting, then you can look over the last several of my postings about space radiation to see some of the problems. So, some other strategy ...