NASA TV (originally NASA Select) is a television service of the US government agency NASA (National Aeronautics and Space Administration), which is simultaneously broadcast over the Internet by satellite broadcasting. Content created by local cable television providers across the United States and amateur television repeaters NASA is considered to be the copyright of the United States Government and is in the public domain, so NASA TV may carry NASA TV at its sole discretion. NASATV is also available through a variety of cable, satellite, and over-the-top media services. world. The network was officially created in the early 1980s to provide NASA managers and engineers with real-time video of their missions.   NASA has operated a television service since the inception of the Space Program to provide video footage to media outlets for the purposes of archiving programs. [Five]
The network broadcasts a large number of educational programs and provides a series of manned missions (including the International Space Station), robot missions, and live broadcasts of domestic and international launches. The network completed the analog-to-digital conversion in late 2005. Some cable TV systems may have been transmitted in analog prior to the transition of US digital TV, but after the introduction of STS-114, the analog and digital dual broadcast period will end. Satellite links are transmitted using the DVB-S system.
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