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11:23
Dark Energy, Cosmology part 2: Crash Course Astronomy #43
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15:15
Deep Time: Crash Course Astronomy #45
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29:34
Vivons-nous dans un multivers ? | 42, la réponse à presque tout | ARTE
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32:20
JD Vance goes after European allies in Munich Security Conference speech | DW News
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12:10
Et si l'on pouvait voir l'Espace-temps ? Expérience immersive
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48:38
The First Fraction of a Second | Crash Course Pods: The Universe #1
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13:06
HUGE Magnet VS Copper Sphere - Defying Gravity- Will a Neodymium Magnet Float Inside?
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28:23