Channel 34 falls within the range of local access channels. Sometimes a local access channel will show the NASA channel when they have no other local programming (usually corresponds to the local education channel). If the local access channel has a website you might be able to look up what programming is coming up or contact them to see when they normally show the NASA channel.
Hope this helps.
It would be a nice national feed. Many have been begging for it. But with FIOS the streaming feed from NASA also works well. Here is my fix. I also have a PC on my widescreen if I really want to view is on something other than my 23" flat panel monitor.