Guest: Open Lines with Dr. David Livingston. Topics: Balloon launch, laws of physics and aerospace engineering, China space policy, NASA policy. Please note that you are invited to comment, ask questions, and rate this program on the new Space Show blog, http://thespaceshow.wordpress.com. This was a two hour Open Lines program divided into two segments. During our first segment, I put forth potential discussion topics including Space Show funding issues, U.S.