Hey Space Placers!
Our Sun and the solar system created by it all reside in the Milky Way Galaxy. But true interstellar space - the space that exists outside the boundary of our star's influence - is being studied by the Voyager spacecraft as they approach that boundary and NASA's IBEX spacecraft.
Recent research indicates that our solar system is not like the "outside" realm beyond the Sun. As provided by NASA: "We’ve detected alien matter that came into our solar system from other parts of the galaxy--and, chemically speaking, it’s not exactly like what we find here at home.” says David McComas the principal investigator for IBEX at the Southwest Research Institute in San Antonio, Texas."
Read More About It: http://science.nasa.gov/science-news/science-at-nasa/2012/10feb_alienmatter/
Sky Guy in VA