The NASA TV website also provides a channel featuring continuous live footage from inside and outside the ISS, established to celebrate the 10th anniversary of the station in orbit, as well as a continuous audio-only channel of ISS and Shuttle mission audio. A high definition simulcast feed of the "Public Channel" was launched on July 19, 2010. The final is the "Space Operations Channel", an internal, encrypted feed for NASA spaceflight operations. The "Media Channel" is dedicated to broadcast news organizations and other members of the press, featuring press release video, interviews, mission press conferences and other services. The "Education Channel" provides space and science programming for schools, museums, and other educational institutions. The "Public Channel" provides 24-hour broadcasting of live and recorded events and documentaries aimed toward the general public. The satellite link uses the DVB-S system for transmission. The network completed its conversion from analog to digital transmission in late 2005 following the launch of STS-114, ending a period of dual analog and digital broadcasting, although some cable television systems may still have transmitted in analog prior to the U.S.
The network airs a large amount of educational programming, and provides live coverage of an array of manned missions, including the Space Shuttle and International Space Station (ISS), robotic missions, and international launches. NASA has operated a television service since the beginning of the space program for archival purposes, and in order to provide media outlets with video footage. The network was formally created in the early 1980s to provide NASA managers and engineers with real-time video of missions. NASA TV is also available on a few broadcast television stations. government and is within the public domain. Local cable television providers across the United States and amateur television repeaters may carry NASA TV at their own discretion, as NASA-created content is considered a work of the U.S. It is broadcast by satellite with a simulcast over the Internet.
NASA TV (originally NASA Select) is the television service of the United States government agency NASA (National Aeronautics and Space Administration).
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