Very high


Age of the Universe

5
Average: 5 (1 vote)
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From the Outer of the Universe to the Inner of the Atom.

5
Average: 5 (1 vote)
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El CERN y los detectores de partículas

0
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Freezing cells in liquid nitrogen: cryopreservation

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Sunspots! Let us introduce ourselves

5
Average: 5 (1 vote)
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Venus

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Moon phases

5
Average: 5 (1 vote)


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