星空剪影
4 videos • 9 views • by jin zi
1
Record breaking space jump - free fall faster than speed of sound - Red Bull Stratos.
The Random Theorizer
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2
HOW IT WORKS: The International Space Station
DOCUMENTARY TUBE
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3
Universe Size Comparison 3D
Alex Evett
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4
New: Mars In 4K
ElderFox Documentaries
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