11.1 Importance of Space programme
English Videos
Benefits of space exploration
Source & Credit
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Silver Polygon Techtainment
The Sputnik 1 Launch: The First Artificial Satellite To Enter Earths Orbit | Mach | NBC News
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NBC News
Sputnik 1 - Earths First Artificial Satellite
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SciNews
Neil Armstrong - First Moon Landing 1969
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NTDTV
What is Satellite and How it Work? Learn About Satellite.
Source & Credit
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Binary Tech
Geostationary Satellite
Source & Credit
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xmphysics
