NASA's Shuttle status web page shows much general information about the Shuttle, including a live countdown timer for imminent launches which is very useful for determining the actual launch time in terms of our local time as NASA uses EDT instead of UTC.
The Space Shuttle Audio is available on IRLP reflectors 9017 and 9877, EchoLink conference *NASA* 13599 and often other EchoLink conferences such as *ORLANDO* 7075. If you experience problems, look at the list of conferences and try others that indicate that they are carrying Shuttle Audio.
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