Is our solar system really that small? Dr. Bruce Betts has this week's Random Space Fact.
New videos every Friday! Subscribe to The Planetary Society: http://bit.ly/1t9KJvY
RSF 11 - How big is our Milky Way?
Starring Dr. Bruce Betts | Video by Merc Boyan | Music by Jim McKeever
Follow Bruce on Twitter: http://twitter.com/randomspacefact
Follow The Planetary Society: http://twitter.com/exploreplanets