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Luch (satellite)
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<p>The <i>Luch</i> Satellite Data Relay Network (SDRN), also referred to as <i>Altair</i> and <i>Gelios</i>, is a series of <a href="/facts/Geosynchronous/nR2yaeUg">geosynchronous</a> Russian <a href="/facts/Communications_satellite/y5RXPMDT">relay satellites</a>, used to transmit live <a href="/facts/Television/X4YG5nT1">TV</a> images, communications and other <a href="/facts/Telemetry/Mz9czXTl">telemetry</a> from the Soviet/Russian space station <i><a href="/facts/Mir/pILadPoB">Mir</a></i>, the <a href="/facts/Russian_Orbital_Segment/Tafa3c7w">Russian Orbital Segment</a> (ROS) of the <a href="/facts/International_Space_Station/VNPUBz9m">International Space Station</a> and other orbital spacecraft to the <a href="/facts/Earth/HLLmDfj0">Earth</a>, in a manner similar to that of the US <a href="/facts/Tracking_and_Data_Relay_Satellite_System/u01Poe4x">Tracking and Data Relay Satellite System</a>. </p>