Episode
1974 - NOVA
S41E09 "Nova" Asteroid: Doomsday or Payday?
The asteroid that exploded over Siberia--injuring more than 1,000 and damaging buildings in six cities--was a shocking reminder that Earth is a target in a cosmic shooting range. From the ...
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ក្រដាសផ្សព្វផ្សាយ
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Backdrops
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តំណដែលគួរឲ្យចាប់អារម្មណ៍
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អត្ថបទរឿង
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ថ្រេល័រ