Live From Mars was active July 1996-December 1997.
On July 6 from 2-4 p.m. Eastern, the third Live From Mars television program was broadcast over PBS and NASA-TV. On July 9 from 2-4 p.m. Eastern, the fourth Live From Mars television program was broadcast over PBS. Due to an error by NASA, it was not broadcast over NASA-TV.
You may have had a hard time getting the "real-TV" programming. Many local PBS stations elect not to distribute this programming live (call them to complain!). People without satellite dishes might not have access to NASA-TV and people outside of the United States aren't covered.
Below are several options for tuning into the programming over the Internet.
During the program:
EMERGENCY ONLY - If for some reason NASA TV preempts Pathfinder coverage try here.
After the program: