I used to be so against all these billion dollar missions. Fact is we will have to look outside our solar system to find another planet that would support human life. A friend opened my eyes though. There have been so many things/materials created that we use in our everyday lives from the engineering done for space exploration. Things we all take for granted, that would of possibly never been created (atleast not so soon) if it wasn't for the space program. 100 yrs ago no one would of ever thought man would one day land on the moon. The next 100 yrs should advance even further.